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| version 1.2, 2001/02/20 18:45:53 | version 1.52, 2001/04/26 14:55:28 |
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| Line 1 | Line 1 |
| /* | /** @file |
| $Id$ | Parser: commonly functions. |
| */ | |
| #ifdef HAVE_CONFIG_H | Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) |
| # include "pa_config.h" | |
| #endif | |
| #include <fcntl.h> | Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf) |
| #include <sys/types.h> | |
| #include <sys/stat.h> | |
| #include <io.h> | |
| #include <stdio.h> | |
| $Id$ | |
| */ | |
| #include "pa_config_includes.h" | |
| #include "pa_common.h" | #include "pa_common.h" |
| #include "pa_types.h" | #include "pa_types.h" |
| #include "pa_exception.h" | |
| #include "pa_pool.h" | |
| #include "pa_globals.h" | |
| #include "pa_value.h" | |
| #include "pa_hash.h" | |
| #include "pa_string.h" | |
| #ifdef WIN32 | #ifndef WIN32 |
| # ifndef _O_TEXT | |
| # define _O_TEXT 0 | |
| # endif | |
| # ifndef _O_BINARY | |
| # define _O_BINARY 0 | |
| # endif | |
| #endif | |
| #if _MSC_VER | |
| int __vsnprintf(char *b, size_t s, const char *f, va_list l) { | int __vsnprintf(char *b, size_t s, const char *f, va_list l) { |
| int r=_vsnprintf(b, --s, f, l); | int r=_vsnprintf(b, --s, f, l); |
| Line 33 int __snprintf(char *b, size_t s, const | Line 44 int __snprintf(char *b, size_t s, const |
| #endif | #endif |
| char *file_read(Pool& pool, char *fname) { | |
| int f; | char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) { |
| void *result; | |
| size_t size; | |
| return file_read(pool, file_spec, result, size, true, | |
| fail_on_read_problem)?(char *)result:0; | |
| } | |
| bool file_read(Pool& pool, const String& file_spec, | |
| void*& data, size_t& read_size, bool as_text, | |
| bool fail_on_read_problem, | |
| size_t offset, size_t limit) { | |
| const char *fname=file_spec.cstr(String::UL_FILE_NAME); | |
| int f; | |
| struct stat finfo; | struct stat finfo; |
| if (fname && !stat(fname,&finfo) && (f=open(fname,O_RDONLY | |
| #ifdef WIN32 | // first open, next stat: |
| |O_TEXT | // directory update of NTFS hard links performed on open. |
| #endif | // ex: |
| ))>=0){ | // a.html:^test[] and b.html hardlink to a.html |
| // user inserts ! before ^test in a.html | |
| // directory entry of b.html in NTFS not updated at once, | |
| // they delay update till open, so we would receive "!^test[" string | |
| // if would do stat, next open. | |
| if( | |
| (f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0 && | |
| stat(fname, &finfo)==0) { | |
| /*if(exclusive) | /*if(exclusive) |
| flock(f, LOCK_EX);*/ | flock(f, LOCK_EX);*/ |
| size_t max_size=limit?min(offset+limit, finfo.st_size)-offset:finfo.st_size; | |
| char *result=static_cast<char *>(pool.malloc(finfo.st_size+1)); | if(!max_size) { // eof |
| int read_size=read(f,result,finfo.st_size); | data=0; |
| if(read_size>=0 && read_size<=finfo.st_size) | read_size=0; |
| result[read_size]='\0'; | return true; |
| } | |
| data=pool.malloc(max_size+(as_text?1:0)); | |
| if(offset) | |
| lseek(f, offset, SEEK_SET); | |
| read_size=read(f, data, max_size); | |
| /*if(exclusive) | /*if(exclusive) |
| flock(f, LOCK_UN);*/ | flock(f, LOCK_UN);*/ |
| close(f); | close(f); |
| return result;//prepare_config(result, remove_empty_lines); | |
| if(read_size>=0 && read_size<=max_size) { | |
| if(as_text) | |
| ((char*&)data)[read_size]=0; | |
| } else | |
| PTHROW(0, 0, | |
| &file_spec, | |
| "read failed: actually read %d bytes count not in [0..%lu] valid range", | |
| read_size, (unsigned long)max_size); //never | |
| return true;//prepare_config(result, remove_empty_lines); | |
| } | |
| if(fail_on_read_problem) | |
| PTHROW(0, 0, | |
| &file_spec, | |
| "read failed: %s (%d)", strerror(errno), errno); | |
| return false; | |
| } | |
| void file_write(Pool& pool, | |
| const String& file_spec, | |
| const void *data, size_t size, | |
| bool as_text/*, | |
| bool exclusive*/) { | |
| const char *fname=file_spec.cstr(String::UL_FILE_NAME); | |
| int f; | |
| if(access(fname, W_OK)!=0) {/*no*/ | |
| size_t pos_after=1; | |
| int pos_before; | |
| while((pos_before=file_spec.pos("/", 1, pos_after))>=0) { | |
| mkdir(file_spec.mid(0, pos_before).cstr(String::UL_FILE_NAME), 0775); | |
| pos_after=pos_before+1; | |
| } | |
| if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0) | |
| close(f); | |
| } | |
| if(access(fname, R_OK|W_OK)==0) { | |
| int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY) | |
| #ifdef WIN32 | |
| |O_TRUNC | |
| #endif | |
| ; | |
| if((f=open(fname, mode, 0666))>=0) { | |
| /*if(exclusive) | |
| flock(f, LOCK_EX);*/ | |
| if(size) write(f, data, size); | |
| #ifndef WIN32 | |
| ftruncate(f, size); | |
| #endif | |
| /*if(exclusive) | |
| flock(f, LOCK_UN);*/ | |
| close(f); | |
| return; | |
| } | |
| } | |
| PTHROW(0, 0, | |
| &file_spec, | |
| "write failed: %s (%d)", strerror(errno), errno); | |
| } | |
| static void rmdir(const String& file_spec, size_t pos_after) { | |
| int pos_before; | |
| if((pos_before=file_spec.pos("/", 1, pos_after))>=0) | |
| rmdir(file_spec, pos_before+1); | |
| rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::UL_FILE_NAME)); | |
| } | |
| void file_delete(Pool& pool, const String& file_spec) { | |
| if(unlink(file_spec.cstr(String::UL_FILE_NAME))!=0) | |
| PTHROW(0, 0, | |
| &file_spec, | |
| "unlink failed: %s (%d)", strerror(errno), errno); | |
| rmdir(file_spec, 1); | |
| } | |
| static bool entry_readable(const String& file_spec, bool need_dir) { | |
| const char *fname=file_spec.cstr(String::UL_FILE_NAME); | |
| struct stat finfo; | |
| if(access(fname, R_OK)==0 && stat(fname, &finfo)==0) { | |
| bool is_dir=(bool)(finfo.st_mode&S_IFDIR); | |
| return is_dir==need_dir; | |
| } | |
| return false; | |
| } | |
| bool file_readable(const String& file_spec) { | |
| return entry_readable(file_spec, false); | |
| } | |
| bool dir_readable(const String& file_spec) { | |
| return entry_readable(file_spec, true); | |
| } | |
| bool file_executable(const String& file_spec) { | |
| return access(file_spec.cstr(String::UL_FILE_NAME), X_OK)==0; | |
| } | |
| size_t file_size(const String& file_spec) { | |
| Pool& pool=file_spec.pool(); | |
| const char *fname=file_spec.cstr(String::UL_FILE_NAME); | |
| struct stat finfo; | |
| if(stat(fname, &finfo)!=0) | |
| PTHROW(0, 0, | |
| &file_spec, | |
| "write failed: %s (%d)", strerror(errno), errno); | |
| return finfo.st_size; | |
| } | |
| char *getrow(char **row_ref, char delim) { | |
| char *result=*row_ref; | |
| if(result) { | |
| *row_ref=strchr(result, delim); | |
| if(*row_ref) | |
| *((*row_ref)++)=0; | |
| else if(!*result) | |
| return 0; | |
| } | |
| return result; | |
| } | |
| char *lsplit(char *string, char delim) { | |
| if(string) { | |
| char *v=strchr(string, delim); | |
| if(v) { | |
| *v=0; | |
| return v+1; | |
| } | |
| } | |
| return 0; | |
| } | |
| char *lsplit(char **string_ref, char delim) { | |
| char *result=*string_ref; | |
| char *next=lsplit(*string_ref, delim); | |
| *string_ref=next; | |
| return result; | |
| } | |
| char *rsplit(char *string, char delim) { | |
| if(string) { | |
| char *v=strrchr(string, delim); | |
| if(v) { | |
| *v=0; | |
| return v+1; | |
| } | |
| } | } |
| // maybe: exception? | return NULL; |
| return NULL; | } |
| /// @todo less stupid type detection | |
| char *format(Pool& pool, double value, char *fmt) { | |
| char *result=(char *)pool.malloc(MAX_NUMBER); | |
| if(fmt) | |
| if(strpbrk(fmt, "diouxX")) | |
| if(strpbrk(fmt, "ouxX")) | |
| snprintf(result, MAX_NUMBER, fmt, (uint)value ); | |
| else | |
| snprintf(result, MAX_NUMBER, fmt, (int)value ); | |
| else | |
| snprintf(result, MAX_NUMBER, fmt, value); | |
| else | |
| snprintf(result, MAX_NUMBER, "%d", (int)value); | |
| return result; | |
| } | |
| size_t stdout_write(const void *buf, size_t size) { | |
| #ifdef WIN32 | |
| do{ | |
| int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout); | |
| if(chunk_written<=0) | |
| break; | |
| size-=chunk_written; | |
| buf=((const char*)buf)+chunk_written; | |
| } while(size>0); | |
| return size; | |
| #else | |
| return fwrite(buf, 1, size, stdout); | |
| #endif | |
| } | |
| const char *unescape_chars(Pool& pool, const char *cp, int len) { | |
| char *s=(char *)pool.malloc(len + 1); | |
| enum EscapeState { | |
| EscapeRest, | |
| EscapeFirst, | |
| EscapeSecond | |
| } escapeState=EscapeRest; | |
| int escapedValue=0; | |
| int srcPos=0; | |
| int dstPos=0; | |
| while(srcPos < len) { | |
| int ch=cp[srcPos]; | |
| switch(escapeState) { | |
| case EscapeRest: | |
| if(ch=='%') { | |
| escapeState=EscapeFirst; | |
| } else if(ch=='+') { | |
| s[dstPos++]=' '; | |
| } else { | |
| s[dstPos++]=ch; | |
| } | |
| break; | |
| case EscapeFirst: | |
| escapedValue=hex_value[ch] << 4; | |
| escapeState=EscapeSecond; | |
| break; | |
| case EscapeSecond: | |
| escapedValue +=hex_value[ch]; | |
| s[dstPos++]=escapedValue; | |
| escapeState=EscapeRest; | |
| break; | |
| } | |
| srcPos++; | |
| } | |
| s[dstPos]=0; | |
| return s; | |
| } | |
| /// used by attributed_meaning_to_string / append_attribute_subattribute | |
| struct Attributed_meaning_info { | |
| String *header; // header line being constructed | |
| String::Untaint_lang lang; // language in which to append to that line | |
| }; | |
| static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue, | |
| void *info) { | |
| if(akey==VALUE_NAME) | |
| return; | |
| Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info); | |
| // ...; charset=windows1251 | |
| *ami.header << "; "; | |
| ami.header->append(akey, ami.lang, true); | |
| *ami.header << "="; | |
| ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang, true); | |
| } | |
| const String& attributed_meaning_to_string(Value& meaning, | |
| String::Untaint_lang lang) { | |
| String &result=*new(meaning.pool()) String(meaning.pool()); | |
| if(Hash *hash=meaning.get_hash()) { | |
| // $value(value) $subattribute(subattribute value) | |
| if(Value *value=static_cast<Value *>(hash->get(*value_name))) | |
| result.append(value->as_string(), lang, true); | |
| Attributed_meaning_info attributed_meaning_info={ | |
| &result, | |
| lang | |
| }; | |
| hash->for_each(append_attribute_subattribute, &attributed_meaning_info); | |
| } else // result value | |
| result.append(meaning.as_string(), lang, true); | |
| return result; | |
| } | |
| #ifdef WIN32 | |
| void back_slashes_to_slashes(char *s) { | |
| if(s) | |
| for(; *s; s++) | |
| if(*s=='\\') | |
| *s='/'; | |
| } | |
| /* | |
| void slashes_to_back_slashes(char *s) { | |
| if(s) | |
| for(; *s; s++) | |
| if(*s=='/') | |
| *s='\\'; | |
| } | |
| */ | |
| #endif | |
| bool StrEqNc(const char *s1, const char *s2, bool strict) { | |
| while(true) { | |
| if(!(*s1)) { | |
| if(!(*s2)) | |
| return true; | |
| else | |
| return !strict; | |
| } else if(!(*s2)) | |
| return !strict; | |
| if(isalpha(*s1)) { | |
| if(tolower(*s1) !=tolower(*s2)) | |
| return false; | |
| } else if((*s1) !=(*s2)) | |
| return false; | |
| s1++; | |
| s2++; | |
| } | |
| } | |
| char *unquote(char*& current, char stop_at) { | |
| char *result=current; | |
| char *dest=current; | |
| // skip leading WS | |
| while(*current==' ' || *current=='\t') | |
| current++; | |
| if(!*current) | |
| return current=0; | |
| bool quoted=*current=='"'; | |
| if(quoted) | |
| current++; | |
| for(; *current; ) { | |
| if(quoted) | |
| switch(*current) { | |
| case '\\': // "...\c | |
| if(current[1]) | |
| current++; | |
| break; | |
| case '"': | |
| current++; | |
| goto break2; | |
| } | |
| else | |
| if(*current==stop_at) | |
| break; | |
| *dest++=*current++; | |
| } | |
| break2: | |
| if(*current) | |
| current++; // skip 'stop_at' | |
| *dest=0; | |
| return result; | |
| } | } |