--- parser3/src/main/pa_common.C 2001/02/25 08:50:14 1.3 +++ parser3/src/main/pa_common.C 2001/04/23 08:52:24 1.49 @@ -1,21 +1,33 @@ -/* - $Id: pa_common.C,v 1.3 2001/02/25 08:50:14 paf Exp $ -*/ +/** @file + Parser: commonly functions. -#ifdef HAVE_CONFIG_H -# include "pa_config.h" -#endif + Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) -#include -#include -#include -#include -#include + Author: Alexander Petrosyan (http://design.ru/paf) + + $Id: pa_common.C,v 1.49 2001/04/23 08:52:24 paf Exp $ +*/ +#include "pa_config_includes.h" #include "pa_common.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 r=_vsnprintf(b, --s, f, l); @@ -32,25 +44,345 @@ int __snprintf(char *b, size_t s, const #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; - if (fname && !stat(fname,&finfo) && (f=open(fname,O_RDONLY -#ifdef WIN32 - |O_TEXT -#endif - ))>=0){ + + // first open, next stat: + // directory update of NTFS hard links performed on open. + // ex: + // 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) flock(f, LOCK_EX);*/ - - char *result=static_cast(pool.malloc(finfo.st_size+1)); - int read_size=read(f,result,finfo.st_size); - if(read_size>=0 && read_size<=finfo.st_size) - result[read_size]='\0'; + size_t max_size=limit?min(offset+limit, finfo.st_size)-offset:finfo.st_size; + if(!max_size) { // eof + data=0; + 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) flock(f, LOCK_UN);*/ 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); } - return NULL; + if(fail_on_read_problem) + PTHROW(0, 0, + &file_spec, + "read failed: %s (%d)", strerror(errno), errno); + return false; +} + +/// @test mkdirs +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, F_OK)!=0) {/*no*/ + 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); +} + +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); +} + +bool file_readable(const String& file_spec) { + return access(file_spec.cstr(String::UL_FILE_NAME), R_OK)==0; +} +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; + } + } + 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; +} + +struct Attributed_meaning_info { + String::Untaint_lang lang; + String *header; +}; +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(info); + + // ...; charset=windows1251 + *ami.header << "; "; + ami.header->append(akey, ami.lang, true); + *ami.header << "="; + ami.header->append(static_cast(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(hash->get(*value_name))) + result.append(value->as_string(), lang, true); + + Attributed_meaning_info attributed_meaning_info={ + lang, + &result + }; + 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; }