The Tor Browser: intl/icu/source/tools/toolutil/uparse.c@6474c204b198 (annotated)

intl/icu/source/tools/toolutil/uparse.c@6474c204b198 (annotated)

intl/icu/source/tools/toolutil/uparse.c

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
 *******************************************************************************
 *
 *   Copyright (C) 2000-2012, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
 *   file name:  uparse.c
 *   encoding:   US-ASCII
 *   tab size:   8 (not used)
 *   indentation:4
 *
 *   created on: 2000apr18
 *   created by: Markus W. Scherer
 *
 *   This file provides a parser for files that are delimited by one single
 *   character like ';' or TAB. Example: the Unicode Character Properties files
 *   like UnicodeData.txt are semicolon-delimited.
 */
 #include "unicode/utypes.h"
 #include "unicode/uchar.h"
 #include "unicode/ustring.h"
 #include "unicode/utf16.h"
 #include "cstring.h"
 #include "filestrm.h"
 #include "uparse.h"
 #include "ustr_imp.h"
 #include <stdio.h>
 U_CAPI const char * U_EXPORT2
 u_skipWhitespace(const char *s) {
     while(U_IS_INV_WHITESPACE(*s)) {
         ++s;
     }
     return s;
 }
 U_CAPI char * U_EXPORT2
 u_rtrim(char *s) {
     char *end=uprv_strchr(s, 0);
     while(s<end && U_IS_INV_WHITESPACE(*(end-1))) {
         *--end = 0;
     }
     return end;
 }
 /*
  * If the string starts with # @missing: then return the pointer to the
  * following non-whitespace character.
  * Otherwise return the original pointer.
  * Unicode 5.0 adds such lines in some data files to document
  * default property values.
  * Poor man's regex for variable amounts of white space.
  */
 static const char *
 getMissingLimit(const char *s) {
     const char *s0=s;
     if(
         *(s=u_skipWhitespace(s))=='#' &&
         *(s=u_skipWhitespace(s+1))=='@' &&
 ==strncmp((s=u_skipWhitespace(s+1)), "missing", 7) &&
         *(s=u_skipWhitespace(s+7))==':'
     ) {
         return u_skipWhitespace(s+1);
     } else {
         return s0;
     }
 }
 U_CAPI void U_EXPORT2
 u_parseDelimitedFile(const char *filename, char delimiter,
                      char *fields[][2], int32_t fieldCount,
                      UParseLineFn *lineFn, void *context,
                      UErrorCode *pErrorCode) {
     FileStream *file;
     char line[300];
     char *start, *limit;
     int32_t i, length;
     if(U_FAILURE(*pErrorCode)) {
         return;
     }
     if(fields==NULL || lineFn==NULL || fieldCount<=0) {
         *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
         return;
     }
     if(filename==NULL || *filename==0 || (*filename=='-' && filename[1]==0)) {
         filename=NULL;
         file=T_FileStream_stdin();
     } else {
         file=T_FileStream_open(filename, "r");
     }
     if(file==NULL) {
         *pErrorCode=U_FILE_ACCESS_ERROR;
         return;
     }
     while(T_FileStream_readLine(file, line, sizeof(line))!=NULL) {
         /* remove trailing newline characters */
         length=(int32_t)(u_rtrim(line)-line);
         /*
          * detect a line with # @missing:
          * start parsing after that, or else from the beginning of the line
          * set the default warning for @missing lines
          */
         start=(char *)getMissingLimit(line);
         if(start==line) {
             *pErrorCode=U_ZERO_ERROR;
         } else {
             *pErrorCode=U_USING_DEFAULT_WARNING;
         }
         /* skip this line if it is empty or a comment */
         if(*start==0 || *start=='#') {
             continue;
         }
         /* remove in-line comments */
         limit=uprv_strchr(start, '#');
         if(limit!=NULL) {
             /* get white space before the pound sign */
             while(limit>start && U_IS_INV_WHITESPACE(*(limit-1))) {
                 --limit;
             }
             /* truncate the line */
             *limit=0;
         }
         /* skip lines with only whitespace */
         if(u_skipWhitespace(start)[0]==0) {
             continue;
         }
         /* for each field, call the corresponding field function */
         for(i=0; i<fieldCount; ++i) {
             /* set the limit pointer of this field */
             limit=start;
             while(*limit!=delimiter && *limit!=0) {
                 ++limit;
             }
             /* set the field start and limit in the fields array */
             fields[i][0]=start;
             fields[i][1]=limit;
             /* set start to the beginning of the next field, if any */
             start=limit;
             if(*start!=0) {
                 ++start;
             } else if(i+1<fieldCount) {
                 *pErrorCode=U_PARSE_ERROR;
                 limit=line+length;
                 i=fieldCount;
                 break;
             }
         }
         /* error in a field function? */
         if(U_FAILURE(*pErrorCode)) {
             break;
         }
         /* call the field function */
         lineFn(context, fields, fieldCount, pErrorCode);
         if(U_FAILURE(*pErrorCode)) {
             break;
         }
     }
     if(filename!=NULL) {
         T_FileStream_close(file);
     }
 }
 /*
  * parse a list of code points
  * store them as a UTF-32 string in dest[destCapacity]
  * return the number of code points
  */
 U_CAPI int32_t U_EXPORT2
 u_parseCodePoints(const char *s,
                   uint32_t *dest, int32_t destCapacity,
                   UErrorCode *pErrorCode) {
     char *end;
     uint32_t value;
     int32_t count;
     if(U_FAILURE(*pErrorCode)) {
         return 0;
     }
     if(s==NULL || destCapacity<0 || (destCapacity>0 && dest==NULL)) {
         *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
         return 0;
     }
     count=0;
     for(;;) {
         s=u_skipWhitespace(s);
         if(*s==';' || *s==0) {
             return count;
         }
         /* read one code point */
         value=(uint32_t)uprv_strtoul(s, &end, 16);
         if(end<=s || (!U_IS_INV_WHITESPACE(*end) && *end!=';' && *end!=0) || value>=0x110000) {
             *pErrorCode=U_PARSE_ERROR;
             return 0;
         }
         /* append it to the destination array */
         if(count<destCapacity) {
             dest[count++]=value;
         } else {
             *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
         }
         /* go to the following characters */
         s=end;
     }
 }
 /*
  * parse a list of code points
  * store them as a string in dest[destCapacity]
  * set the first code point in *pFirst
  * @return The length of the string in numbers of UChars.
  */
 U_CAPI int32_t U_EXPORT2
 u_parseString(const char *s,
               UChar *dest, int32_t destCapacity,
               uint32_t *pFirst,
               UErrorCode *pErrorCode) {
     char *end;
     uint32_t value;
     int32_t destLength;
     if(U_FAILURE(*pErrorCode)) {
         return 0;
     }
     if(s==NULL || destCapacity<0 || (destCapacity>0 && dest==NULL)) {
         *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
         return 0;
     }
     if(pFirst!=NULL) {
         *pFirst=0xffffffff;
     }
     destLength=0;
     for(;;) {
         s=u_skipWhitespace(s);
         if(*s==';' || *s==0) {
             if(destLength<destCapacity) {
                 dest[destLength]=0;
             } else if(destLength==destCapacity) {
                 *pErrorCode=U_STRING_NOT_TERMINATED_WARNING;
             } else {
                 *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
             }
             return destLength;
         }
         /* read one code point */
         value=(uint32_t)uprv_strtoul(s, &end, 16);
         if(end<=s || (!U_IS_INV_WHITESPACE(*end) && *end!=';' && *end!=0) || value>=0x110000) {
             *pErrorCode=U_PARSE_ERROR;
             return 0;
         }
         /* store the first code point */
         if(pFirst!=NULL) {
             *pFirst=value;
             pFirst=NULL;
         }
         /* append it to the destination array */
         if((destLength+U16_LENGTH(value))<=destCapacity) {
             U16_APPEND_UNSAFE(dest, destLength, value);
         } else {
             destLength+=U16_LENGTH(value);
         }
         /* go to the following characters */
         s=end;
     }
 }
 /* read a range like start or start..end */
 U_CAPI int32_t U_EXPORT2
 u_parseCodePointRangeAnyTerminator(const char *s,
                                    uint32_t *pStart, uint32_t *pEnd,
                                    const char **terminator,
                                    UErrorCode *pErrorCode) {
     char *end;
     uint32_t value;
     if(U_FAILURE(*pErrorCode)) {
         return 0;
     }
     if(s==NULL || pStart==NULL || pEnd==NULL) {
         *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
         return 0;
     }
     /* read the start code point */
     s=u_skipWhitespace(s);
     value=(uint32_t)uprv_strtoul(s, &end, 16);
     if(end<=s || value>=0x110000) {
         *pErrorCode=U_PARSE_ERROR;
         return 0;
     }
     *pStart=*pEnd=value;
     /* is there a "..end"? */
     s=u_skipWhitespace(end);
     if(*s!='.' || s[1]!='.') {
         *terminator=end;
         return 1;
     }
     s=u_skipWhitespace(s+2);
     /* read the end code point */
     value=(uint32_t)uprv_strtoul(s, &end, 16);
     if(end<=s || value>=0x110000) {
         *pErrorCode=U_PARSE_ERROR;
         return 0;
     }
     *pEnd=value;
     /* is this a valid range? */
     if(value<*pStart) {
         *pErrorCode=U_PARSE_ERROR;
         return 0;
     }
     *terminator=end;
     return value-*pStart+1;
 }
 U_CAPI int32_t U_EXPORT2
 u_parseCodePointRange(const char *s,
                       uint32_t *pStart, uint32_t *pEnd,
                       UErrorCode *pErrorCode) {
     const char *terminator;
     int32_t rangeLength=
         u_parseCodePointRangeAnyTerminator(s, pStart, pEnd, &terminator, pErrorCode);
     if(U_SUCCESS(*pErrorCode)) {
         terminator=u_skipWhitespace(terminator);
         if(*terminator!=';' && *terminator!=0) {
             *pErrorCode=U_PARSE_ERROR;
             return 0;
         }
     }
     return rangeLength;
 }
 U_CAPI int32_t U_EXPORT2
 u_parseUTF8(const char *source, int32_t sLen, char *dest, int32_t destCapacity, UErrorCode *status) {
     const char *read = source;
     int32_t i = 0;
     unsigned int value = 0;
     if(sLen == -1) {
         sLen = (int32_t)strlen(source);
     }
     while(read < source+sLen) {
         sscanf(read, "%2x", &value);
         if(i < destCapacity) {
             dest[i] = (char)value;
         }
         i++;
         read += 2;
     }
     return u_terminateChars(dest, destCapacity, i, status);
 }

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intl/icu/source/tools/toolutil/uparse.c@6474c204b198 (annotated)

intl/icu/source/tools/toolutil/uparse.c