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| version 1.20, 2001/04/23 09:38:39 | version 1.84, 2002/11/27 09:43:53 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: @b image parser class. | Parser: @b image parser class. |
| Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) | Copyright(c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | |
| */ | |
| Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf) | static const char* IDENT_IMAGE_C="$Date$"; |
| $Id$ | /* |
| jpegsize: gets the width and height (in pixels) of a jpeg file | |
| Andrew Tong, werdna@ugcs.caltech.edu February 14, 1995 | |
| modified slightly by alex@ed.ac.uk | |
| and further still by rjray@uswest.com | |
| optimization and general re-write from tmetro@vl.com | |
| from perl by paf@design.ru | |
| */ | */ |
| #include "pa_config_includes.h" | #include "pa_config_includes.h" |
| Line 17 | Line 25 |
| #include "pa_vfile.h" | #include "pa_vfile.h" |
| #include "pa_vimage.h" | #include "pa_vimage.h" |
| // global var | // class |
| class MImage : public Methoded { | |
| public: // VStateless_class | |
| Value *create_new_value(Pool& pool) { return new(pool) VImage(pool); } | |
| public: | |
| MImage(Pool& pool); | |
| VStateless_class *image_class; | public: // Methoded |
| bool used_directly() { return true; } | |
| }; | |
| // helpers | // helpers |
| #ifndef DOXYGEN | |
| class Measure_reader { | class Measure_reader { |
| public: | public: |
| enum { READ_CHUNK_SIZE=0x400 };// 1K | virtual size_t read(const void *&buf, size_t limit)=0; |
| typedef size_t(*Func)(void *& buf, size_t limit, void *info); | virtual void seek(long value, int whence)=0; |
| virtual long tell()=0; | |
| }; | |
| Measure_reader(Func afunc, void *ainfo) : | class Measure_file_reader: public Measure_reader { |
| func(afunc), info(ainfo), | public: |
| chunk(0), offset(0), size(0) { | Measure_file_reader(Pool& apool, int af, const String& afile_name, const char *afname): |
| pool(apool), file_name(afile_name), fname(afname), f(af) { | |
| } | } |
| size_t read(unsigned char *& buf, size_t limit) { | /*override*/size_t read(const void *&abuf, size_t limit) { |
| if(offset+limit>size) // nothing left | if(limit==0) |
| if(offset==0 || limit==1) { // only one-byte continuations allowed | |
| size=(*func)(chunk, READ_CHUNK_SIZE, info); | |
| offset=0; | |
| } else | |
| return 0;// as if EOF | |
| if(!size) // EOF | |
| return 0; | return 0; |
| // something left | void *lbuf=pool.malloc(limit); |
| size_t read_size=min(offset+limit, size)-offset; | size_t read_size=(size_t)::read(f, lbuf, limit); abuf=lbuf; |
| buf=((unsigned char *)chunk)+offset; | if(ssize_t(read_size)<0 || read_size>limit) |
| offset+=read_size; | throw Exception(0, |
| &file_name, | |
| "measure failed: actually read %lu bytes count not in [0..%lu] valid range", | |
| read_size, limit); | |
| return read_size; | return read_size; |
| } | } |
| /*override*/void seek(long value, int whence) { | |
| if(lseek(f, value, whence)<0) | |
| throw Exception("file.seek", | |
| &file_name, | |
| "seek(value=%ld, whence=%d) failed: %s (%d), actual filename '%s'", | |
| value, whence, strerror(errno), errno, fname); | |
| } | |
| /*override*/long tell() { return lseek(f, 0, SEEK_CUR); } | |
| private: | |
| Pool& pool; | |
| const String& file_name; const char *fname; | |
| int f; | |
| }; | |
| class Measure_buf_reader: public Measure_reader { | |
| public: | |
| Measure_buf_reader(const void *abuf, size_t asize, const String& afile_name): | |
| buf(abuf), size(asize), file_name(afile_name), offset(0) { | |
| } | |
| /*override*/size_t read(const void *&abuf, size_t limit) { | |
| size_t to_read=min(limit, size-offset); | |
| abuf=(const char*)buf+offset; | |
| offset+=to_read; | |
| return to_read; | |
| } | |
| /*override*/void seek(long value, int whence) { | |
| size_t new_offset; | |
| switch(whence) { | |
| case SEEK_CUR: new_offset=offset+value; break; | |
| case SEEK_SET: new_offset=(size_t)value; break; | |
| default: throw Exception("file.seek", 0, "whence #%d not supported", 0, whence); break; | |
| } | |
| if((ssize_t)new_offset<0 || new_offset>size) | |
| throw Exception("file.seek", | |
| &file_name, | |
| "seek(value=%l, whence=%d) failed: out of buffer, new_offset>size (%l>%l) or new_offset<0", | |
| value, whence, new_offset, size); | |
| offset=new_offset; | |
| } | |
| /*override*/long tell() { return offset; } | |
| private: | private: |
| Func func; | |
| void *info; | |
| void *chunk; | const void *buf; size_t size; |
| const String& file_name; | |
| size_t offset; | size_t offset; |
| size_t size; | |
| }; | }; |
| // GIF | #endif |
| /// PNG file header | |
| struct PNG_Header { | |
| char dummy[12]; | |
| char signature[4]; //< must be "IHDR" | |
| uchar high_width[2]; //< image width high bytes [we ignore for now] | |
| uchar width[2]; //< image width low bytes | |
| uchar high_height[2]; //< image height high bytes [we ignore for now] | |
| uchar height[4]; //< image height | |
| }; | |
| /// GIF file header | |
| struct GIF_Header { | struct GIF_Header { |
| char type[3]; // 'GIF' | char signature[3]; // 'GIF' |
| char version[3]; | char version[3]; |
| unsigned char width[2]; | uchar width[2]; |
| unsigned char height[2]; | uchar height[2]; |
| char dif; | char dif; |
| char fonColor; | char fonColor; |
| char nulls; | char nulls; |
| }; | }; |
| // JPEG | /// JPEG record head |
| struct JFIF_Header { | struct JPG_Segment_head { |
| char length[2]; // length of JFIF segment marker | uchar marker; |
| char identifier[5]; // JFIF identifier | uchar code; |
| char version[2]; // version | uchar length[2]; |
| char units; // units X of Y pixel density | }; |
| char xdensity[2]; // X pixel density | /// JPEG frame header |
| char ydensity[2]; // X pixel density | struct JPG_Size_segment_body { |
| char xthumbnails; // width of thumbnails | char data; //< data precision of bits/sample |
| char ythumbnails; // height of thumbnails | uchar height[2]; //< image height |
| char reserved; // reserved | uchar width[2]; //< image width |
| }; | char numComponents; //< number of color components |
| struct JPG_Frame { | }; |
| char length[2]; // length of image marker | |
| char data; // data precision of bits/sample | /// JPEG frame header |
| char height[2]; // image height | struct JPG_Exif_segment_start { |
| char width[2]; // image width | char signature[6]; // Exif\0\0 |
| char numComponents; // number of color components | }; |
| /// JPEG Exif TIFF Header | |
| struct JPG_Exif_TIFF_header { | |
| uchar byte_align_identifier[2]; | |
| char dummy[2]; // always 000A [or 0A00] | |
| uchar first_IFD_offset[4]; // Usually the first IFD starts immediately next to TIFF header, so this offset has value '0x00000008'. | |
| }; | |
| // JPEG Exif IFD start | |
| struct JPG_Exif_IFD_start { | |
| uchar directory_entry_count[2]; // the number of directory entry contains in this IFD | |
| }; | }; |
| // TTTT ffff NNNNNNNN DDDDDDDD | |
| struct JPG_Exif_IFD_entry { | |
| uchar tag[2]; // Tag number, this shows a kind of data | |
| uchar format[2]; // data format | |
| uchar components_count[4]; // number of components | |
| uchar value_or_offset_to_it[4]; // data value or offset to data value | |
| }; | |
| #define JPG_IFD_TAG_EXIF_OFFSET 0x8769 | |
| // | // |
| inline short bytes_to_int(unsigned char HI, unsigned char LO) { | inline ushort x_endian_to_ushort(uchar b0, uchar b1) { |
| return(short)((HI<<8) + LO); | return (ushort)((b1<<8) + b0); |
| } | } |
| void measure_gif(Pool& pool, const String *origin_string, | inline uint x_endian_to_uint(uchar b0, uchar b1, uchar b2, uchar b3) { |
| Measure_reader& reader, int& width, int& height) { | return (uint)(((((b3<<8) + b2)<<8)+b1)<<8)+b0; |
| } | |
| unsigned char *buf; | inline ushort endian_to_ushort(bool is_big, const uchar *b/* [2] */) { |
| return is_big?x_endian_to_ushort(b[1], b[0]): | |
| x_endian_to_ushort(b[0], b[1]); | |
| } | |
| inline uint endian_to_uint(bool is_big, const uchar *b /* [4] */) { | |
| return is_big?x_endian_to_uint(b[3], b[2], b[1], b[0]): | |
| x_endian_to_uint(b[0], b[1], b[2], b[3]); | |
| } | |
| static void measure_gif(Pool& pool, const String *origin_string, | |
| Measure_reader& reader, ushort& width, ushort& height) { | |
| const void *buf; | |
| const int head_size=sizeof(GIF_Header); | const int head_size=sizeof(GIF_Header); |
| if(reader.read(buf, head_size)<head_size) | if(reader.read(buf, head_size)<head_size) |
| PTHROW(0, 0, | throw Exception("image.format", |
| origin_string, | origin_string, |
| "broken GIF header - file size is less then %d bytes", head_size); | "not GIF file - too small"); |
| GIF_Header *head=(GIF_Header *)buf; | |
| GIF_Header& screenD=*reinterpret_cast<GIF_Header *>(buf); | if(strncmp(head->signature, "GIF", 3)!=0) |
| if(strncmp(screenD.type, "GIF", 3)!=0) | throw Exception("image.format", |
| PTHROW(0, 0, | |
| origin_string, | origin_string, |
| "bad image file - GIF signature not found"); | "not GIF file - wrong signature"); |
| width=bytes_to_int(screenD.width[1], screenD.width[0]); | width=endian_to_ushort(false, head->width); |
| height=bytes_to_int(screenD.height[1], screenD.height[0]); | height=endian_to_ushort(false, head->height); |
| } | } |
| void measure_jpeg(Pool& pool, const String *origin_string, | static Value *parse_IFD_entry_formatted_one_value(Pool& pool, |
| Measure_reader& reader, int& width, int& height) { | bool is_big, |
| // JFIF format markers | ushort format, |
| const unsigned char SOI=0xD8; | size_t component_size, |
| const unsigned char EOI=0xD9; | const uchar *value) { |
| const unsigned char APP0=0xE0; | switch(format) { |
| const unsigned char SOF0=0xC0; | case 1: // unsigned byte |
| const unsigned char SOF2=0xC2; | return new(pool) VInt(pool, (uchar)value[0]); |
| const unsigned char COM=0xFE; | case 3: // unsigned short |
| return new(pool) VInt(pool, endian_to_ushort(is_big, value)); | |
| unsigned char *screenD_buf; | case 4: // unsigned long |
| unsigned char *h_buf=0; | // 'double' because parser's Int is signed |
| return new(pool) VDouble(pool, endian_to_uint(is_big, value)); | |
| case 5: // unsigned rational | |
| { | |
| uint numerator=endian_to_uint(is_big, value); value+=component_size/2; | |
| uint denominator=endian_to_uint(is_big, value); | |
| if(!denominator) | |
| return 0; | |
| return new(pool) VDouble(pool, ((double)numerator)/denominator); | |
| } | |
| case 6: // signed byte | |
| return new(pool) VInt(pool, (signed char)value[0]); | |
| case 8: // signed short | |
| return new(pool) VInt(pool, (signed short)endian_to_ushort(is_big, value)); | |
| case 9: // signed long | |
| return new(pool) VInt(pool, (signed int)endian_to_uint(is_big, value)); | |
| case 10: // signed rational | |
| { | |
| signed int numerator=(signed int)endian_to_uint(is_big, value); value+=component_size/2; | |
| uint denominator=endian_to_uint(is_big, value); | |
| if(!denominator) | |
| return 0; | |
| return new(pool) VDouble(pool, numerator/denominator); | |
| } | |
| /* | |
| case 11: // single float | |
| todo | |
| case 12: // double float | |
| todo | |
| */ | |
| }; | |
| bool flag=false; | return 0; |
| } | |
| static Value *parse_IFD_entry_formatted_value(Pool& pool, | |
| bool is_big, ushort format, | |
| size_t component_size, uint components_count, | |
| const uchar *value) { | |
| if(format==2) { // ascii string, exception: the only type with varying size | |
| const char *cstr=(const char *)value; | |
| size_t size=components_count; | |
| if(const char *premature_zero_pos=(const char *)memchr(cstr, 0, size)) | |
| size=premature_zero_pos-cstr; | |
| return new(pool) VString(*new(pool) String(pool, cstr, size, true/*tainted*/)); | |
| } | |
| if(components_count==1) | |
| return parse_IFD_entry_formatted_one_value(pool, is_big, format, component_size, value); | |
| VHash& result=*new(pool) VHash(pool); | |
| Hash& hash=result.hash(0); | |
| for(uint i=0; i<components_count; i++, value+=component_size) { | |
| String& skey=*new(pool) String(pool); | |
| { | |
| char *buf=(char *)pool.malloc(MAX_NUMBER); | |
| snprintf(buf, MAX_NUMBER, "%d", i); | |
| skey << buf; | |
| } | |
| hash.put(skey, parse_IFD_entry_formatted_one_value(pool, is_big, format, component_size, value)); | |
| } | |
| return &result; | |
| } | |
| static Value *parse_IFD_entry_value(Pool& pool, | |
| bool is_big, Measure_reader& reader, long tiff_base, | |
| JPG_Exif_IFD_entry& entry) { | |
| size_t format2component_size[]={ | |
| 0, // undefined | |
| 1, // unsigned byte | |
| 1, // ascii string | |
| 2, // unsigned short | |
| 4, // unsigned long | |
| 8, // unsigned rational | |
| 1, // signed byte | |
| 0, // undefined | |
| 2, // signed short | |
| 4, // signed long | |
| 8, // signed rational | |
| /* | |
| 4, // single float | |
| 8, // double float | |
| */ | |
| }; | |
| ushort format=endian_to_ushort(is_big, entry.format); | |
| if(format>=sizeof(format2component_size)/sizeof(format2component_size[0])) | |
| return 0; // format out of range, ignoring | |
| size_t component_size=format2component_size[format]; | |
| if(component_size==0) | |
| return 0; // undefined format | |
| // You can get the total data byte length by multiplies | |
| // a 'bytes/components' value (see above chart) by number of components stored 'NNNNNNNN' area | |
| uint components_count=endian_to_uint(is_big, entry.components_count); | |
| size_t value_size=component_size*components_count; | |
| // If its size is over 4bytes, 'DDDDDDDD' contains the offset to data stored address | |
| Value *result; | |
| if(value_size<=4) | |
| result=parse_IFD_entry_formatted_value(pool, | |
| is_big, format, | |
| component_size, components_count, | |
| entry.value_or_offset_to_it); | |
| else { | |
| long remembered=reader.tell(); | |
| { | |
| reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it), SEEK_SET); | |
| const void *value; | |
| if(reader.read(value, value_size)<sizeof(value_size)) | |
| return 0; | |
| result=parse_IFD_entry_formatted_value(pool, | |
| is_big, format, | |
| component_size, components_count, | |
| (const uchar*)value); | |
| } | |
| reader.seek(remembered, SEEK_SET); | |
| } | |
| return result; | |
| } | |
| static void parse_IFD(Pool& pool, | |
| Hash& hash, | |
| bool is_big, Measure_reader& reader, long tiff_base); | |
| static void parse_IFD_entry(Pool& pool, Hash& hash, | |
| bool is_big, Measure_reader& reader, long tiff_base, | |
| JPG_Exif_IFD_entry& entry) { | |
| ushort tag=endian_to_ushort(is_big, entry.tag); | |
| if(tag==JPG_IFD_TAG_EXIF_OFFSET) { | |
| long remembered=reader.tell(); | |
| { | |
| reader.seek(tiff_base+endian_to_uint(is_big, entry.value_or_offset_to_it), SEEK_SET); | |
| parse_IFD(pool, hash, is_big, reader, tiff_base); | |
| } | |
| reader.seek(remembered, SEEK_SET); | |
| return; | |
| } | |
| unsigned char *prefix; | if(Value *value=parse_IFD_entry_value(pool, is_big, reader, tiff_base, entry)) { |
| String& skey=*new(pool) String(pool); | |
| { | |
| char *buf=(char *)pool.malloc(MAX_NUMBER); | |
| snprintf(buf, MAX_NUMBER, "%u", tag); | |
| skey << buf; | |
| } | |
| if(const char *name=(const char *)exif_tag_value2name->get(skey)) | |
| hash.put(*new(pool) String(pool, name), value); | |
| else | |
| hash.put(skey, value); | |
| } | |
| } | |
| static void parse_IFD(Pool& pool, | |
| Hash& hash, | |
| bool is_big, Measure_reader& reader, long tiff_base) { | |
| const void *buf; | |
| if(reader.read(buf, sizeof(JPG_Exif_IFD_start))<sizeof(JPG_Exif_IFD_start)) | |
| return; | |
| JPG_Exif_IFD_start *start=(JPG_Exif_IFD_start *)buf; | |
| ushort directory_entry_count=endian_to_ushort(is_big, start->directory_entry_count); | |
| for(int i=0; i<directory_entry_count; i++) { | |
| if(reader.read(buf, sizeof(JPG_Exif_IFD_entry))<sizeof(JPG_Exif_IFD_entry)) | |
| return; | |
| parse_IFD_entry(pool, hash, is_big, reader, tiff_base, *(JPG_Exif_IFD_entry *)buf); | |
| } | |
| // then goes: LLLLLLLL Offset to next IFD [not going there] | |
| } | |
| static Value *parse_exif(Pool& pool, | |
| Measure_reader& reader, | |
| const String *origin_string) { | |
| const void *buf; | |
| if(reader.read(buf, sizeof(JPG_Exif_segment_start))<sizeof(JPG_Exif_segment_start)) | |
| throw Exception("image.format", | |
| origin_string, | |
| "not JPEG file - can not fully read Exif segment start"); | |
| JPG_Exif_segment_start *start=(JPG_Exif_segment_start *)buf; | |
| if(memcmp(start->signature, "Exif\0\0", 4+2)!=0) //signature invalid? | |
| return 0; // ignore invalid block | |
| uint tiff_base=reader.tell(); | |
| if(reader.read(buf, sizeof(JPG_Exif_TIFF_header))<sizeof(JPG_Exif_TIFF_header)) | |
| return 0; | |
| JPG_Exif_TIFF_header *head=(JPG_Exif_TIFF_header *)buf; | |
| bool is_big=head->byte_align_identifier[0]=='M'; // [M]otorola vs [I]ntel | |
| uint first_IFD_offset=endian_to_uint(is_big, head->first_IFD_offset); | |
| reader.seek(tiff_base+first_IFD_offset, SEEK_SET); | |
| VHash& vhash=*new(pool) VHash(pool); | |
| // IFD | |
| parse_IFD(pool, vhash.hash(0), is_big, reader, tiff_base); | |
| return &vhash; | |
| } | |
| static void measure_jpeg(Pool& pool, const String *origin_string, | |
| Measure_reader& reader, ushort& width, ushort& height, Value ** exif) { | |
| // JFIF format markers | |
| const uchar MARKER=0xFF; | |
| const uchar CODE_SIZE_A=0xC0; | |
| const uchar CODE_SIZE_B=0xC1; | |
| const uchar CODE_SIZE_C=0xC2; | |
| const uchar CODE_SIZE_D=0xC3; | |
| const uchar CODE_EXIF=0xE1; | |
| const void *buf; | |
| const size_t prefix_size=2; | const size_t prefix_size=2; |
| if(reader.read(prefix, prefix_size)<prefix_size) | if(reader.read(buf, prefix_size)<prefix_size) |
| PTHROW(0, 0, | throw Exception("image.format", |
| origin_string, | origin_string, |
| "broken JPEG file - size is less then %d bytes", prefix_size); | "not JPEG file - too small"); |
| uchar *signature=(uchar *)buf; | |
| if(((unsigned char *)prefix)[1]!=SOI) | if(!(signature[0]==0xFF && signature[1]==0xD8)) |
| PTHROW(0, 0, | throw Exception("image.format", |
| origin_string, | origin_string, |
| "broken JPEG file - second byte of header is not 0x%02X", SOI); | "not JPEG file - wrong signature"); |
| unsigned char zero=0; | |
| unsigned char *marker=&zero; | |
| do { | while(true) { |
| while((*marker)!=0xFF) | uint segment_base=reader.tell()+2/*marker,code*/; |
| if(reader.read(marker, sizeof(char))<=0) break; | if(reader.read(buf, sizeof(JPG_Segment_head))<sizeof(JPG_Segment_head)) |
| if(reader.read(marker, sizeof(char))<=0) break; | |
| switch(*marker) { | |
| case EOI: | |
| marker=&zero; | |
| break; | break; |
| case APP0: | JPG_Segment_head *head=(JPG_Segment_head *)buf; |
| if(!flag) { | |
| flag=true; | // Verify that it's a valid segment. |
| if(reader.read(screenD_buf, sizeof(JFIF_Header)) < sizeof(JFIF_Header)) | if(head->marker!=MARKER) |
| break; | throw Exception("image.format", |
| JFIF_Header& screenD=*reinterpret_cast<JFIF_Header *>(screenD_buf); | origin_string, |
| if((bytes_to_int(screenD.length[0], screenD.length[1]) < 16) || | "not JPEG file - marker not found"); |
| strcasecmp(screenD.identifier, "JFIF")) flag=false; | |
| } | switch(head->code) { |
| break; | // http://www.ba.wakwak.com/~tsuruzoh/Computer/Digicams/exif-e.html |
| case SOF0: | case CODE_EXIF: |
| case SOF2: | if(exif && !*exif) // seen .jpg with some xml under EXIF tag, after real exif block :) |
| if(reader.read(h_buf, sizeof(JPG_Frame))<sizeof(JPG_Frame)) | *exif=parse_exif(pool, reader, origin_string); |
| flag=false; | |
| break; | break; |
| default: break; | |
| } | case CODE_SIZE_A: |
| } while(*marker!=EOI); | case CODE_SIZE_B: |
| case CODE_SIZE_C: | |
| if(flag && h_buf) { | case CODE_SIZE_D: |
| JPG_Frame& h=*reinterpret_cast<JPG_Frame *>(h_buf); | { |
| width=bytes_to_int(h.width[0], h.width[1]); | // Segments that contain size info |
| height=bytes_to_int(h.height[0], h.height[1]); | if(reader.read(buf, sizeof(JPG_Size_segment_body))<sizeof(JPG_Size_segment_body)) |
| } else | throw Exception("image.format", |
| PTHROW(0, 0, | origin_string, |
| "not JPEG file - can not fully read Size segment"); | |
| JPG_Size_segment_body *body=(JPG_Size_segment_body *)buf; | |
| width=endian_to_ushort(true, body->width); | |
| height=endian_to_ushort(true, body->height); | |
| } | |
| return; | |
| }; | |
| reader.seek(segment_base+endian_to_ushort(true, head->length), SEEK_SET); | |
| } | |
| throw Exception("image.format", | |
| origin_string, | |
| "broken JPEG file - size frame not found"); | |
| } | |
| static void measure_png(Pool& pool, const String *origin_string, | |
| Measure_reader& reader, ushort& width, ushort& height) { | |
| const void *buf; | |
| const int head_size=sizeof(PNG_Header); | |
| if(reader.read(buf, head_size)<head_size) | |
| throw Exception("image.format", | |
| origin_string, | origin_string, |
| "broken JPEG file - APP0 frame not found"); | "not PNG file - too small"); |
| PNG_Header *head=(PNG_Header *)buf; | |
| if(strncmp(head->signature, "IHDR", 4)!=0) | |
| throw Exception("image.format", | |
| origin_string, | |
| "not PNG file - wrong signature"); | |
| width=endian_to_ushort(true, head->width); | |
| height=endian_to_ushort(true, head->height); | |
| } | } |
| // measure center | // measure center |
| void measure(Pool& pool, const String& file_name, | static void measure(Pool& pool, const String& file_name, |
| Measure_reader& reader, int& width, int& height) { | Measure_reader& reader, ushort& width, ushort& height, Value ** exif) { |
| if(const char *cext=strrchr(file_name.cstr(), '.')) { | if(const char *cext=strrchr(file_name.cstr(String::UL_FILE_SPEC), '.')) { |
| cext++; | cext++; |
| if(strcasecmp(cext, "GIF")==0) | if(strcasecmp(cext, "GIF")==0) |
| measure_gif(pool, &file_name, reader, width, height); | measure_gif(pool, &file_name, reader, width, height); |
| else if(strcasecmp(cext, "JPG")==0 || strcasecmp(cext, "JPEG")==0) | else if(strcasecmp(cext, "JPG")==0 || strcasecmp(cext, "JPEG")==0) |
| measure_jpeg(pool, &file_name, reader, width, height); | measure_jpeg(pool, &file_name, reader, width, height, exif); |
| else if(strcasecmp(cext, "PNG")==0) | |
| measure_png(pool, &file_name, reader, width, height); | |
| else | else |
| PTHROW(0, 0, | throw Exception("image.format", |
| &file_name, | &file_name, |
| "unhandled image file name extension '%s'", cext); | "unhandled image file name extension '%s'", cext); |
| } else | } else |
| PTHROW(0, 0, | throw Exception("image.format", |
| &file_name, | &file_name, |
| "can not determine image type - no file name extension"); | "can not determine image type - no file name extension"); |
| } | } |
| // read from somewhere | // methods |
| struct Read_mem_info { | |
| unsigned char *ptr; | |
| unsigned char *eof; | |
| }; | |
| static size_t read_mem(void*& buf, size_t limit, void *info) { | |
| Read_mem_info& rmi=*static_cast<Read_mem_info *>(info); | |
| buf=rmi.ptr; | |
| size_t read_size=min(limit, (size_t)(rmi.eof-rmi.ptr)); | |
| rmi.ptr+=read_size; | |
| return read_size; | |
| } | |
| struct Read_disk_info { | #ifndef DOXYGEN |
| const String *file_spec; | struct File_measure_action_info { |
| size_t offset; | ushort *width; |
| ushort *height; | |
| Value ** exif; | |
| const String *file_name; | |
| }; | }; |
| static size_t read_disk(void*& buf, size_t limit, void *info) { | #endif |
| Read_disk_info& rdi=*static_cast<Read_disk_info *>(info); | static void file_measure_action(Pool& pool, |
| Pool& pool=rdi.file_spec->pool(); | struct stat& finfo, int f, |
| const String& file_spec, const char *fname, bool as_text, | |
| size_t read_size; | void *context) { |
| file_read(pool, *rdi.file_spec, | File_measure_action_info& info=*static_cast<File_measure_action_info *>(context); |
| buf, read_size, | |
| false/*as_text*/, | |
| true/*fail_on_read_problem*/, | |
| rdi.offset, limit); | |
| rdi.offset+=read_size; | Measure_file_reader reader(pool, f, *info.file_name, fname); |
| return read_size; | measure(pool, *info.file_name, reader, *info.width, *info.height, info.exif); |
| } | } |
| // methods | |
| /// ^image:measure[DATA] | |
| static void _measure(Request& r, const String& method_name, MethodParams *params) { | static void _measure(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& data=params->get_no_junction(0, "data must not be code"); | Value& data=params->as_no_junction(0, "data must not be code"); |
| void *info;Measure_reader::Func read_func; | ushort width=0; |
| Read_mem_info read_mem_info; | ushort height=0; |
| Read_disk_info read_disk_info; | Value *exif=0; |
| const String *file_name; | const String *file_name; |
| if(data.is_string()) { | if(file_name=data.get_string()) { |
| file_name=data.get_string(); | File_measure_action_info info={&width, &height, &exif, file_name}; |
| read_disk_info.file_spec=&r.absolute(*file_name); | file_read_action_under_lock(pool, r.absolute(*file_name), |
| read_disk_info.offset=0; | "measure", file_measure_action, &info); |
| info=&read_disk_info;read_func=read_disk; | |
| } else { | } else { |
| const VFile& vfile=*data.as_vfile(); | const VFile& vfile=*data.as_vfile(); |
| file_name=&static_cast<Value *>(vfile.fields().get(*name_name))->as_string(); | file_name=&static_cast<Value *>(vfile.fields().get(*name_name))->as_string(); |
| read_mem_info.ptr=(unsigned char *)vfile.value_ptr(); | Measure_buf_reader reader( |
| read_mem_info.eof=read_mem_info.ptr+vfile.value_size(); | vfile.value_ptr(), |
| info=&read_mem_info;read_func=read_mem; | vfile.value_size(), |
| *file_name | |
| ); | |
| measure(pool, *file_name, reader, width, height, &exif); | |
| } | } |
| Measure_reader reader(read_func, info); | VImage &vimage=*static_cast<VImage *>(r.get_self()); |
| int width, height; | vimage.set(file_name, width, height, 0, exif); |
| measure(pool, *file_name, reader, width, height); | |
| static_cast<VImage *>(r.self)->set(file_name, width, height); | |
| } | } |
| #ifndef DOXYGEN | |
| struct Attrib_info { | struct Attrib_info { |
| String *tag; | String *tag; ///< html tag being constructed |
| Hash *skip; | Hash *skip; ///< tag attributes not to append to tag string [to skip] |
| }; | }; |
| #endif | |
| static void append_attrib_pair(const Hash::Key& key, Hash::Val *val, void *info) { | static void append_attrib_pair(const Hash::Key& key, Hash::Val *val, void *info) { |
| Attrib_info& ai=*static_cast<Attrib_info *>(info); | Attrib_info& ai=*static_cast<Attrib_info *>(info); |
| if(ai.skip && ai.skip->get(key)) | // skip user-specified and internal(starting with "line-") attributes |
| if(ai.skip && ai.skip->get(key) || key.pos("line-")==0) | |
| return; | return; |
| Value& value=*static_cast<Value *>(val); | Value& value=*static_cast<Value *>(val); |
| // src="a.gif" width=123 ismap[=-1] | // src="a.gif" width=123 ismap[=-1] |
| *ai.tag << " " << key; | *ai.tag << " " << key; |
| if(value.is_string() || value.as_double()>=0) | if(value.is_string() || value.as_int()>=0) |
| *ai.tag << "=\"" << value.as_string() << "\""; | *ai.tag << "=\"" << value.as_string() << "\""; |
| } | } |
| /// ^image.html[] | |
| /// ^image.html[hash] | |
| static void _html(Request& r, const String& method_name, MethodParams *params) { | static void _html(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| String tag(pool); | String tag(pool); |
| tag << "<img"; | tag << "<img"; |
| const Hash& fields=static_cast<VImage *>(r.self)->fields(); | const Hash& fields=static_cast<VImage *>(r.get_self())->fields(); |
| Hash *attribs=0; | Hash *attribs=0; |
| if(params->size()) | if(params->size()) { |
| if(attribs=params->get(0).get_hash()) { | // for backward compatibility: someday was ^html{} |
| Attrib_info attrib_info={&tag, 0}; | Value &vattribs=r.process_to_value(params->get(0), |
| attribs->for_each(append_attrib_pair, &attrib_info); | /*0/*no name* /,*/ |
| } else | false/*don't intercept string*/); |
| PTHROW(0, 0, | if(!vattribs.is_string()) // allow empty |
| &method_name, | if(attribs=vattribs.get_hash(&method_name)) { |
| "attributes must be must be hash"); | Attrib_info attrib_info={&tag, 0}; |
| attribs->for_each(append_attrib_pair, &attrib_info); | |
| } else | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| "attributes must be hash"); | |
| } | |
| Attrib_info attrib_info={&tag, attribs}; | Attrib_info attrib_info={&tag, attribs}; |
| fields.for_each(append_attrib_pair, &attrib_info); | fields.for_each(append_attrib_pair, &attrib_info); |
| Line 310 static void _html(Request& r, const Stri | Line 653 static void _html(Request& r, const Stri |
| r.write_pass_lang(tag); | r.write_pass_lang(tag); |
| } | } |
| /// @test wrap FILE to auto-object | |
| static gdImage *load(Request& r, const String& method_name, | static gdImage *load(Request& r, const String& method_name, |
| const String& file_name){ | const String& file_name){ |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| const char *file_name_cstr=r.absolute(file_name).cstr(String::UL_FILE_NAME); | const char *file_name_cstr=r.absolute(file_name).cstr(String::UL_FILE_SPEC); |
| if(FILE *f=fopen(file_name_cstr, "rb")) { | if(FILE *f=fopen(file_name_cstr, "rb")) { |
| gdImage& image=*new(pool) gdImage(pool); | gdImage& image=*new(pool) gdImage(pool); |
| image.CreateFromGif(f); | bool ok=image.CreateFromGif(f); |
| fclose(f); | fclose(f); |
| if(!ok) | |
| throw Exception("image.format", | |
| &file_name, | |
| "is not in GIF format"); | |
| return ℑ | return ℑ |
| } else { | } else { |
| PTHROW(0, 0, | throw Exception("file.missing", |
| &method_name, | &method_name, |
| "can not open '%s'", file_name_cstr); | "can not open '%s'", file_name_cstr); |
| return 0; | return 0; |
| Line 329 static gdImage *load(Request& r, const S | Line 677 static gdImage *load(Request& r, const S |
| } | } |
| /// ^image.load[background.gif] | |
| static void _load(Request& r, const String& method_name, MethodParams *params) { | static void _load(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& vfile_name=params->get_no_junction(0, "file name must not be code"); | const String& file_name=params->as_string(0, "file name must not be code"); |
| const String& file_name=vfile_name.as_string(); | |
| gdImage& image=*load(r, method_name, file_name); | gdImage& image=*load(r, method_name, file_name); |
| int width=image.SX(); | int width=image.SX(); |
| int height=image.SY(); | int height=image.SY(); |
| static_cast<VImage *>(r.self)->set(&file_name, width, height, &image); | static_cast<VImage *>(r.get_self())->set(&file_name, width, height, &image); |
| } | } |
| /// ^image.create[width;height] bgcolor=white | |
| /// ^image.create[width;height;bgcolor] | |
| static void _create(Request& r, const String& method_name, MethodParams *params) { | static void _create(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| int width=(int)r.process(params->get(0)).as_double(); | int width=params->as_int(0, "width must be int", r); |
| int height=(int)r.process(params->get(1)).as_double(); | int height=params->as_int(1, "height must be int", r); |
| int bgcolor_value=0xffFFff; | int bgcolor_value=0xffFFff; |
| if(params->size()>2) | if(params->size()>2) |
| bgcolor_value=(int)r.process(params->get(2)).as_double(); | bgcolor_value=params->as_int(2, "color must be int", r); |
| gdImage& image=*new(pool) gdImage(pool); | gdImage& image=*new(pool) gdImage(pool); |
| image.Create(width, height); | image.Create(width, height); |
| image.FilledRectangle(0, 0, width-1, height-1, image.Color(bgcolor_value)); | image.FilledRectangle(0, 0, width-1, height-1, image.Color(bgcolor_value)); |
| static_cast<VImage *>(r.self)->set(0, width, height, &image); | static_cast<VImage *>(r.get_self())->set(0, width, height, &image); |
| } | } |
| /// ^image.gif[] | |
| static void _gif(Request& r, const String& method_name, MethodParams *params) { | static void _gif(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.get_self())->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| Line 373 static void _gif(Request& r, const Strin | Line 716 static void _gif(Request& r, const Strin |
| String out(pool); image->Gif(out); | String out(pool); image->Gif(out); |
| VFile& vfile=*new(pool) VFile(pool); | VFile& vfile=*new(pool) VFile(pool); |
| String& image_gif=*new(pool) String(pool, "image/gif"); | Value *content_type=new(pool) VString(*new(pool) String(pool, "image/gif")); |
| vfile.set(false/*not tainted*/, | vfile.set(false/*not tainted*/, |
| out.cstr(String::UL_AS_IS), out.size(), 0, &image_gif); | out.cstr(), out.size(), 0, content_type); |
| r.write_no_lang(vfile); | r.write_no_lang(vfile); |
| } | } |
| /// ^image.line(x0;y0;x1;y1;color) | |
| static void _line(Request& r, const String& method_name, MethodParams *params) { | static void _line(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.get_self())->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| image->Line( | image->Line( |
| (int)r.process(params->get(0)).as_double(), | params->as_int(0, "x0 must be int", r), |
| (int)r.process(params->get(1)).as_double(), | params->as_int(1, "y0 must be int", r), |
| (int)r.process(params->get(2)).as_double(), | params->as_int(2, "x1 must be int", r), |
| (int)r.process(params->get(3)).as_double(), | params->as_int(3, "y1 must be int", r), |
| image->Color((int)r.process(params->get(4)).as_double())); | image->Color(params->as_int(4, "color must be int", r))); |
| } | } |
| /// ^image.fill(x;y;color) | |
| static void _fill(Request& r, const String& method_name, MethodParams *params) { | static void _fill(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.get_self())->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| image->Fill( | image->Fill( |
| (int)r.process(params->get(0)).as_double(), | params->as_int(0, "x must be int", r), |
| (int)r.process(params->get(1)).as_double(), | params->as_int(1, "y must be int", r), |
| image->Color((int)r.process(params->get(2)).as_double())); | image->Color(params->as_int(2, "color must be int", r))); |
| } | } |
| /// ^image.rectangle(x0;y0;x1;y1;color) | |
| static void _rectangle(Request& r, const String& method_name, MethodParams *params) { | static void _rectangle(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.get_self())->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| image->Rectangle( | image->Rectangle( |
| (int)r.process(params->get(0)).as_double(), | params->as_int(0, "x0 must be int", r), |
| (int)r.process(params->get(1)).as_double(), | params->as_int(1, "y0 must be int", r), |
| (int)r.process(params->get(2)).as_double(), | params->as_int(2, "x1 must be int", r), |
| (int)r.process(params->get(3)).as_double(), | params->as_int(3, "y1 must be int", r), |
| image->Color((int)r.process(params->get(4)).as_double())); | image->Color(params->as_int(4, "color must be int", r))); |
| } | } |
| /// ^image.bar(x0;y0;x1;y1;color) | |
| static void _bar(Request& r, const String& method_name, MethodParams *params) { | static void _bar(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.get_self())->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| image->FilledRectangle( | image->FilledRectangle( |
| (int)r.process(params->get(0)).as_double(), | params->as_int(0, "x0 must be int", r), |
| (int)r.process(params->get(1)).as_double(), | params->as_int(1, "y0 must be int", r), |
| (int)r.process(params->get(2)).as_double(), | params->as_int(2, "x1 must be int", r), |
| (int)r.process(params->get(3)).as_double(), | params->as_int(3, "y1 must be int", r), |
| image->Color((int)r.process(params->get(4)).as_double())); | image->Color(params->as_int(4, "color must be int", r))); |
| } | } |
| /// ^image.replace(color-source;color-dest)(x;y)... point coord pairs | #ifndef DOXYGEN |
| static void add_point(Array::Item *value, void *info) { | |
| Array& row=*static_cast<Array *>(value); | |
| gdImage::Point **p=static_cast<gdImage::Point **>(info); | |
| (**p).x=row.get_string(0)->as_int(); | |
| (**p).y=row.get_string(1)->as_int(); | |
| (*p)++; | |
| } | |
| #endif | |
| static void _replace(Request& r, const String& method_name, MethodParams *params) { | static void _replace(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.get_self())->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| if((params->size()-2)%2) // I see your thoughts, but that's more readable | Table *table=params->as_no_junction(2, "coordinates must not be code").get_table(); |
| PTHROW(0, 0, | if(!table) |
| throw Exception(0, | |
| &method_name, | |
| "coordinates must be table"); | |
| gdImage::Point *all_p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*table->size()); | |
| gdImage::Point *add_p=all_p; | |
| table->for_each(add_point, &add_p); | |
| image->FilledPolygonReplaceColor(all_p, table->size(), | |
| image->Color(params->as_int(0, "src color must be int", r)), | |
| image->Color(params->as_int(1, "dest color must be int", r))); | |
| } | |
| static void _polyline(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.get_self())->image; | |
| if(!image) | |
| throw Exception(0, | |
| &method_name, | &method_name, |
| "y coordinate missing"); | "does not contain an image"); |
| int n=(params->size()-2)/2; | Table *table=params->as_no_junction(1, "coordinates must not be code").get_table(); |
| if(!table) | |
| gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); | throw Exception(0, |
| for(int i=0; i<n; i++) { | &method_name, |
| p[i].x=(int)r.process(params->get(2+i*2+0)).as_double(); | "coordinates must be table"); |
| p[i].y=(int)r.process(params->get(2+i*2+1)).as_double(); | |
| } | gdImage::Point *all_p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*table->size()); |
| image->FilledPolygonReplaceColor(p, n, | gdImage::Point *add_p=all_p; |
| image->Color((int)r.process(params->get(0)).as_double()), // src color | table->for_each(add_point, &add_p); |
| image->Color((int)r.process(params->get(1)).as_double()));// dest color | image->Polygon(all_p, table->size(), |
| image->Color(params->as_int(0, "color must be int", r)), | |
| false/*not closed*/); | |
| } | } |
| /// ^image.polygon(color)(x;y)... point coord pairs | |
| static void _polygon(Request& r, const String& method_name, MethodParams *params) { | static void _polygon(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.get_self())->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| if((params->size()-1)%2) // [I see..] see now? | Table *table=params->as_no_junction(1, "coordinates must not be code").get_table(); |
| PTHROW(0, 0, | if(!table) |
| &method_name, | throw Exception(0, |
| "y coordinate missing"); | &method_name, |
| "coordinates must be table"); | |
| int n=(params->size()-1)/2; | |
| gdImage::Point *all_p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*table->size()); | |
| gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); | gdImage::Point *add_p=all_p; |
| for(int i=0; i<n; i++) { | table->for_each(add_point, &add_p); |
| p[i].x=(int)r.process(params->get(1+i*2+0)).as_double(); | image->Polygon(all_p, table->size(), |
| p[i].y=(int)r.process(params->get(1+i*2+1)).as_double(); | image->Color(params->as_int(0, "color must be int", r))); |
| } | |
| image->Polygon(p, n, | |
| image->Color((int)r.process(params->get(0)).as_double())); | |
| } | } |
| /// ^image.polybar(color)(x;y)... point coord pairs | |
| static void _polybar(Request& r, const String& method_name, MethodParams *params) { | static void _polybar(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.self)->image; | gdImage *image=static_cast<VImage *>(r.get_self())->image; |
| if(!image) | if(!image) |
| PTHROW(0, 0, | throw Exception(0, |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| if((params->size()-1)%2) // [I see..] see now? | Table *table=params->as_no_junction(1, "coordinates must not be code").get_table(); |
| PTHROW(0, 0, | if(!table) |
| &method_name, | throw Exception("parser.runtime", |
| "y coordinate missing"); | &method_name, |
| "coordinates must be table"); | |
| int n=(params->size()-1)/2; | |
| gdImage::Point *all_p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*table->size()); | |
| gdImage::Point *p=(gdImage::Point *)pool.malloc(sizeof(gdImage::Point)*n); | gdImage::Point *add_p=all_p; |
| for(int i=0; i<n; i++) { | table->for_each(add_point, &add_p); |
| p[i].x=(int)r.process(params->get(1+i*2+0)).as_double(); | image->FilledPolygon(all_p, table->size(), |
| p[i].y=(int)r.process(params->get(1+i*2+1)).as_double(); | image->Color(params->as_int(0, "color must be int", r))); |
| } | |
| image->FilledPolygon(p, n, | |
| image->Color((int)r.process(params->get(0)).as_double())); | |
| } | } |
| // font | // font |
| #define Y(y)(y+index*height+1) | #define Y(y)(y+index*height+1) |
| /// simple gdImage-based font storage & text output | |
| class Font : public Pooled { | class Font : public Pooled { |
| public: | public: |
| int height; /* Font heigth */ | const static int letter_spacing; |
| int space; /* Default char width */ | int height; ///< Font heigth |
| int monospace; ///< Default char width | |
| int spacebarspace; ///< spacebar width | |
| gdImage& ifont; | gdImage& ifont; |
| const String& alphabet; | const String& alphabet; |
| Font(Pool& pool, | Font(Pool& pool, |
| const String& aalphabet, | const String& aalphabet, |
| gdImage& aifont, int aheight, int aspace) : Pooled(pool), | gdImage& aifont, int aheight, int amonospace, int aspacebarspace) : Pooled(pool), |
| alphabet(aalphabet), | alphabet(aalphabet), |
| height(aheight), space(aspace), | height(aheight), monospace(amonospace), spacebarspace(aspacebarspace), |
| ifont(aifont) { | ifont(aifont) { |
| } | } |
| Line 557 public: | Line 921 public: |
| int index_width(int index) { | int index_width(int index) { |
| if(index<0) | if(index<0) |
| index=index_of('.'); | return spacebarspace; |
| if(index<0) | |
| return 0; | |
| int tr=ifont.GetTransparent(); | int tr=ifont.GetTransparent(); |
| for(int x=ifont.SX()-1; x>0; x--) { | for(int x=ifont.SX()-1; x>=0; x--) { |
| for(int y=0; y<height-1; y++) | for(int y=0; y<height-1; y++) |
| if(ifont.GetPixel(x, Y(y))!=tr) | if(ifont.GetPixel(x, Y(y))!=tr) |
| return x+2; | return x+1; |
| } | } |
| return 0; | return 0; |
| } | } |
| Line 575 public: | Line 937 public: |
| } | } |
| /* ******************************** string ********************************** */ | /* ******************************** string ********************************** */ |
| /* | |
| int string_width(const char *cstr){ | int string_width(const String& s){ |
| const char *cstr=s.cstr(); | |
| int result=0; | int result=0; |
| for(; *cstr; cstr++) | for(; *cstr; cstr++) |
| result+=index_width(index_of(*cstr)); | result+=index_width(index_of(*cstr)); |
| return result; | return result; |
| } | } |
| */ | |
| void string_display(gdImage& image, int x, int y, const String& s){ | void string_display(gdImage& image, int x, int y, const String& s){ |
| const char *cstr=s.cstr(String::UL_AS_IS); | const char *cstr=s.cstr(); |
| if(cstr) for(; *cstr; cstr++) { | if(cstr) for(; *cstr; cstr++) { |
| int index=index_of(*cstr); | int index=index_of(*cstr); |
| index_display(image, x, y, index); | index_display(image, x, y, index); |
| x+=space ? space : index_width(index); | x+=letter_spacing + (monospace ? monospace : index_width(index)); |
| } | } |
| } | } |
| }; | }; |
| /** | const int Font::letter_spacing=1; |
| ^image.font[alPHAbet;font-file-name.gif](height) | |
| ^image.font[alPHAbet;font-file-name.gif](height;width) | |
| */ | |
| static void _font(Request& r, const String& method_name, MethodParams *params) { | static void _font(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| Value& valphabet=params->get_no_junction(0, "alphabet must not be code"); | const String& alphabet=params->as_string(0, "alphabet must not be code"); |
| Value& file_name=params->get_no_junction(1, "file_name must not be code"); | gdImage& image=*load(r, method_name, params->as_string(1, "file_name must not be code")); |
| int height=(int)r.process(params->get(2)).as_double(); | int spacebar_width=params->as_int(2, "spacebar_width must be int", r); |
| int monospace_width; | |
| int width=params->size()>3?(int)r.process(params->get(3)).as_double():0; | if(params->size()>3) { |
| monospace_width=params->as_int(3, "monospace_width must be int", r); | |
| if(!monospace_width) | |
| monospace_width=image.SX(); | |
| } else | |
| monospace_width=0; | |
| static_cast<VImage *>(r.self)->font=new(pool) Font(pool, | if(!alphabet.size()) |
| valphabet.as_string(), | throw Exception("parser.runtime", |
| *load(r, method_name, file_name.as_string()), | &method_name, |
| height, width); | "alphabet must not be empty"); |
| if(int remainder=image.SY() % alphabet.size()) | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| "font-file height(%d) not divisable by alphabet size(%d), remainder=%d", | |
| image.SY(), alphabet.size(), remainder); | |
| static_cast<VImage *>(r.get_self())->font=new(pool) Font(pool, | |
| alphabet, | |
| image, | |
| image.SY() / alphabet.size(), monospace_width, spacebar_width); | |
| } | } |
| /// ^image.text(x;y)[text] | |
| static void _text(Request& r, const String& method_name, MethodParams *params) { | static void _text(Request& r, const String& method_name, MethodParams *params) { |
| Pool& pool=r.pool(); | Pool& pool=r.pool(); |
| int x=(int)r.process(params->get(0)).as_double(); | int x=params->as_int(0, "x must be int", r); |
| int y=(int)r.process(params->get(1)).as_double(); | int y=params->as_int(1, "y must be int", r); |
| const String& s=r.process(params->get(2)).as_string(); | const String& s=params->as_string(2, "text must not be code"); |
| VImage& vimage=*static_cast<VImage *>(r.self); | VImage& vimage=*static_cast<VImage *>(r.get_self()); |
| if(vimage.image) | if(vimage.image) |
| if(vimage.font) | if(vimage.font) |
| vimage.font->string_display(*vimage.image, x, y, s); | vimage.font->string_display(*vimage.image, x, y, s); |
| else | else |
| PTHROW(0, 0, | throw Exception("parser.runtime", |
| &method_name, | |
| "set the font first"); | |
| else | |
| throw Exception(0, | |
| &method_name, | |
| "does not contain an image"); | |
| } | |
| static void _length(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| const String& s=params->as_string(0, "text must not be code"); | |
| VImage& vimage=*static_cast<VImage *>(r.get_self()); | |
| if(vimage.image) | |
| if(vimage.font) { | |
| r.write_no_lang(*new(pool) VInt(pool, vimage.font->string_width(s))); | |
| } else | |
| throw Exception("parser.runtime", | |
| &method_name, | &method_name, |
| "set the font first"); | "set the font first"); |
| else | else |
| PTHROW(0, 0, | throw Exception(0, |
| &method_name, | |
| "does not contain an image"); | |
| } | |
| static void _arc(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.get_self())->image; | |
| if(!image) | |
| throw Exception(0, | |
| &method_name, | &method_name, |
| "does not contain an image"); | "does not contain an image"); |
| image->Arc( | |
| params->as_int(0, "center_x must be int", r), | |
| params->as_int(1, "center_y must be int", r), | |
| params->as_int(2, "width must be int", r), | |
| params->as_int(3, "height must be int", r), | |
| params->as_int(4, "start degrees must be int", r), | |
| params->as_int(5, "end degrees must be int", r), | |
| image->Color(params->as_int(6, "cx must be int", r))); | |
| } | } |
| // initialize | static void _sector(Request& r, const String& method_name, MethodParams *params) { |
| void initialize_image_class(Pool& pool, VStateless_class& vclass) { | Pool& pool=r.pool(); |
| gdImage *image=static_cast<VImage *>(r.get_self())->image; | |
| if(!image) | |
| throw Exception(0, | |
| &method_name, | |
| "does not contain an image"); | |
| image->Sector( | |
| params->as_int(0, "center_x must be int", r), | |
| params->as_int(1, "center_y must be int", r), | |
| params->as_int(2, "width must be int", r), | |
| params->as_int(3, "height must be int", r), | |
| params->as_int(4, "start degrees must be int", r), | |
| params->as_int(5, "end degrees must be int", r), | |
| image->Color(params->as_int(6, "color must be int", r))); | |
| } | |
| static void _circle(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *image=static_cast<VImage *>(r.get_self())->image; | |
| if(!image) | |
| throw Exception(0, | |
| &method_name, | |
| "does not contain an image"); | |
| int size=params->as_int(2, "radius must be int", r)*2; | |
| image->Arc( | |
| params->as_int(0, "center_x must be int", r), | |
| params->as_int(1, "center_y must be int", r), | |
| size, //w | |
| size, //h | |
| 0, //s | |
| 360, //e | |
| image->Color(params->as_int(3, "color must be int", r))); | |
| } | |
| gdImage& as_image(Pool& pool, const String& method_name, MethodParams *params, | |
| int index, const char *msg) { | |
| gdImage *src=0; | |
| Value& value=params->as_no_junction(index, msg); | |
| if(Value *vimage=value.as(VIMAGE_TYPE, false)) { | |
| src=static_cast<VImage *>(vimage)->image; | |
| if(!src) | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| msg); | |
| } else | |
| throw Exception("parser.runtime", | |
| &method_name, | |
| msg); | |
| return *src; | |
| } | |
| static void _copy(Request& r, const String& method_name, MethodParams *params) { | |
| Pool& pool=r.pool(); | |
| gdImage *dest=static_cast<VImage *>(r.get_self())->image; | |
| if(!dest) | |
| throw Exception(0, | |
| &method_name, | |
| "self does not contain an image"); | |
| gdImage& src=as_image(pool, method_name, params, 0, "src must be image"); | |
| int sx=params->as_int(1, "src_x must be int", r); | |
| int sy=params->as_int(2, "src_y must be int", r); | |
| int sw=params->as_int(3, "src_w must be int", r); | |
| int sh=params->as_int(4, "src_h must be int", r); | |
| int dx=params->as_int(5, "dest_x must be int", r); | |
| int dy=params->as_int(6, "dest_y must be int", r); | |
| if(params->size()>1+2+2+2) { | |
| int dw=params->as_int(1+2+2+2, "dest_w must be int", r); | |
| int dh=(int)(params->size()>1+2+2+2+1? | |
| params->as_int(1+2+2+2+1, "dest_h must be int", r):sh*(((double)dw)/((double)sw))); | |
| int tolerance=params->size()>1+2+2+2+2? | |
| params->as_int(1+2+2+2+2, "tolerance must be int", r):150; | |
| src.CopyResampled(*dest, dx, dy, sx, sy, dw, dh, sw, sh, tolerance); | |
| } else | |
| src.Copy(*dest, dx, dy, sx, sy, sw, sh); | |
| } | |
| // constructor | |
| MImage::MImage(Pool& apool) : Methoded(apool, "image") { | |
| // ^image:measure[DATA] | // ^image:measure[DATA] |
| vclass.add_native_method("measure", Method::CT_DYNAMIC, _measure, 1, 1); | add_native_method("measure", Method::CT_DYNAMIC, _measure, 1, 1); |
| // ^image.html[] | |
| // ^image.html[hash] | |
| add_native_method("html", Method::CT_DYNAMIC, _html, 0, 1); | |
| /// ^image.html[] | // ^image.load[background.gif] |
| /// ^image.html[hash] | add_native_method("load", Method::CT_DYNAMIC, _load, 1, 1); |
| vclass.add_native_method("html", Method::CT_DYNAMIC, _html, 0, 1); | |
| /// ^image.load[background.gif] | // ^image.create[width;height] bgcolor=white |
| vclass.add_native_method("load", Method::CT_DYNAMIC, _load, 1, 1); | // ^image.create[width;height;bgcolor] |
| add_native_method("create", Method::CT_DYNAMIC, _create, 2, 3); | |
| /// ^image.create[width;height] bgcolor=white | // ^image.gif[] |
| /// ^image.create[width;height;bgcolor] | add_native_method("gif", Method::CT_DYNAMIC, _gif, 0, 0); |
| vclass.add_native_method("create", Method::CT_DYNAMIC, _create, 2, 3); | |
| /// ^image.gif[] | // ^image.line(x0;y0;x1;y1;color) |
| vclass.add_native_method("gif", Method::CT_DYNAMIC, _gif, 0, 0); | add_native_method("line", Method::CT_DYNAMIC, _line, 5, 5); |
| /// ^image.line(x0;y0;x1;y1;color) | // ^image.fill(x;y;color) |
| vclass.add_native_method("line", Method::CT_DYNAMIC, _line, 5, 5); | add_native_method("fill", Method::CT_DYNAMIC, _fill, 3, 3); |
| /// ^image.fill(x;y;color) | // ^image.rectangle(x0;y0;x1;y1;color) |
| vclass.add_native_method("fill", Method::CT_DYNAMIC, _fill, 3, 3); | add_native_method("rectangle", Method::CT_DYNAMIC, _rectangle, 5, 5); |
| /// ^image.rectangle(x0;y0;x1;y1;color) | // ^image.bar(x0;y0;x1;y1;color) |
| vclass.add_native_method("rectangle", Method::CT_DYNAMIC, _rectangle, 5, 5); | add_native_method("bar", Method::CT_DYNAMIC, _bar, 5, 5); |
| /// ^image.bar(x0;y0;x1;y1;color) | // ^image.replace(color-source;color-dest)[table x:y] |
| vclass.add_native_method("bar", Method::CT_DYNAMIC, _bar, 5, 5); | add_native_method("replace", Method::CT_DYNAMIC, _replace, 3, 3); |
| /// ^image.replace(color-source;color-dest)(x;y)... point coord pairs | // ^image.polyline(color)[table x:y] |
| vclass.add_native_method("replace", Method::CT_DYNAMIC, _replace, 2+3*2, 2+100*2); | add_native_method("polyline", Method::CT_DYNAMIC, _polyline, 2, 2); |
| /// ^image.polygon(color)(x;y)... point coord pairs | // ^image.polygon(color)[table x:y] |
| vclass.add_native_method("polygon", Method::CT_DYNAMIC, _polygon, 1+3*2, 1+100*2); | add_native_method("polygon", Method::CT_DYNAMIC, _polygon, 2, 2); |
| /// ^image.polybar(color)(x;y)... point coord pairs | // ^image.polybar(color)[table x:y] |
| vclass.add_native_method("polybar", Method::CT_DYNAMIC, _polybar, 1+3*2, 1+100*2); | add_native_method("polybar", Method::CT_DYNAMIC, _polybar, 2, 2); |
| /// ^image.font[alPHAbet;font-file-name.gif](height) | // ^image.font[alPHAbet;font-file-name.gif](spacebar_width) |
| /// ^image.font[alPHAbet;font-file-name.gif](height;width) | // ^image.font[alPHAbet;font-file-name.gif](spacebar_width;width) |
| vclass.add_native_method("font", Method::CT_DYNAMIC, _font, 3, 4); | add_native_method("font", Method::CT_DYNAMIC, _font, 3, 4); |
| /// ^image.text(x;y)[text] | // ^image.text(x;y)[text] |
| vclass.add_native_method("text", Method::CT_DYNAMIC, _text, 3, 3); | add_native_method("text", Method::CT_DYNAMIC, _text, 3, 3); |
| // ^image.ngth[text] | |
| add_native_method("length", Method::CT_DYNAMIC, _length, 1, 1); | |
| // ^image.arc(center x;center y;width;height;start in degrees;end in degrees;color) | |
| add_native_method("arc", Method::CT_DYNAMIC, _arc, 7, 7); | |
| // ^image.sector(center x;center y;width;height;start in degrees;end in degrees;color) | |
| add_native_method("sector", Method::CT_DYNAMIC, _sector, 7, 7); | |
| // ^image.circle(center x;center y;r;color) | |
| add_native_method("circle", Method::CT_DYNAMIC, _circle, 4, 4); | |
| // ^image.copy[source](src x;src y;src w;src h;dst x;dst y[;dest w[;dest h[;tolerance]]]) | |
| add_native_method("copy", Method::CT_DYNAMIC, _copy, 1+2+2+2, (1+2+2+2)+2+1); | |
| } | |
| // global variable | |
| Methoded *image_class; | |
| // creator | |
| Methoded *MImage_create(Pool& pool) { | |
| return image_class=new(pool) MImage(pool); | |
| } | } |