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Overview
Comment:Enhance the "translate" utility so that formatting characters can occur in between the "%" and "C" of a printf-style conversion on @-lines.
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SHA1: f9711803e22ee8887484b981dc227b19d69d58c5
User & Date: drh 2012-04-28 03:32:12.265
Context
2012-04-28
08:05
Move the enhanced spider-defense mechanism into the trunk. ... (check-in: 433cde1ce8 user: drh tags: trunk)
07:15
Changes anchor tags (<a>) so that the href= attribute can be set by javascript rather than by HTML. This is to make it harder for spiders to follow the hyperlinks to every diff and annotation in the project history. It all seems to work, but it needs further testing and review before going live. ... (check-in: 8ae52fc418 user: drh tags: spider-defense)
03:32
Enhance the "translate" utility so that formatting characters can occur in between the "%" and "C" of a printf-style conversion on @-lines. ... (check-in: f9711803e2 user: drh tags: trunk)
2012-04-27
15:56
Always update the baseurl: entry in the config table if using a repository from a URL that has not previously been recorded. ... (check-in: c7d6e334f8 user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/translate.c.
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** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************


**
** Input lines that begin with the "@" character are translated into
** either cgi_printf() statements or string literals and the
** translated code is written on standard output.
**
** The problem this program is attempt to solve is as follows:  When
** writing CGI programs in C, we typically want to output a lot of HTML
** text to standard output.  In pure C code, this involves doing a
** printf() with a big string containing all that text.  But we have
** to insert special codes (ex: \n and \") for many common characters,
** which interferes with the readability of the HTML.
**
** This tool allows us to put raw HTML, without the special codes, in
** the middle of a C program.  This program then translates the text
** into standard C by inserting all necessary backslashes and other
** punctuation.

*/
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>

/*








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** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** SYNOPSIS: 
**
** Input lines that begin with the "@" character are translated into
** either cgi_printf() statements or string literals and the
** translated code is written on standard output.
**
** The problem this program is attempt to solve is as follows:  When
** writing CGI programs in C, we typically want to output a lot of HTML
** text to standard output.  In pure C code, this involves doing a
** printf() with a big string containing all that text.  But we have
** to insert special codes (ex: \n and \") for many common characters,
** which interferes with the readability of the HTML.
**
** This tool allows us to put raw HTML, without the special codes, in
** the middle of a C program.  This program then translates the text
** into standard C by inserting all necessary backslashes and other
** punctuation.
** 
*/
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>

/*
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        fprintf(out,"\n");
      }else{
        fprintf(out,"%*s\"%s\\n\"\n",indent, "", zOut);
      }
    }else{
      /* Otherwise (if the last non-whitespace was not '=') then generate
      ** a cgi_printf() statement whose format is the text following the '@'.
      ** Substrings of the form "%C(...)" where C is any character will
      ** puts "%C" in the format and add the "..." as an argument to the
      ** cgi_printf call.
      */
      int indent;


      i++;
      if( isspace(zLine[i]) ){ i++; }
      indent = i;
      for(j=0; zLine[i] && zLine[i]!='\r' && zLine[i]!='\n'; i++){
        if( zLine[i]=='"' || zLine[i]=='\\' ){ zOut[j++] = '\\'; }
        zOut[j++] = zLine[i];
        if( zLine[i]!='%' || zLine[i+1]=='%' || zLine[i+1]==0 ) continue;
        if( zLine[i+2]!='(' ) continue;
        i++;
        zOut[j++] = zLine[i];
        zArg[nArg++] = ',';
        i += 2;
        k = 1;
        while( zLine[i] ){

          if( zLine[i]==')' ){
            k--;
            if( k==0 ) break;
          }else if( zLine[i]=='(' ){
            k++;
          }
          zArg[nArg++] = zLine[i++];
        }
      }
      zOut[j] = 0;
      if( !inPrint ){
        fprintf(out,"%*scgi_printf(\"%s\\n\"",indent-2,"", zOut);
        inPrint = 1;
      }else{








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        fprintf(out,"\n");
      }else{
        fprintf(out,"%*s\"%s\\n\"\n",indent, "", zOut);
      }
    }else{
      /* Otherwise (if the last non-whitespace was not '=') then generate
      ** a cgi_printf() statement whose format is the text following the '@'.
      ** Substrings of the form "%C(...)" (where C is any sequence of 
      ** characters other than \000 and '(') will put "%C" in the
      ** format and add the "(...)" as an argument to the cgi_printf call.
      */
      int indent;
      int nC;
      char c;
      i++;
      if( isspace(zLine[i]) ){ i++; }
      indent = i;
      for(j=0; zLine[i] && zLine[i]!='\r' && zLine[i]!='\n'; i++){
        if( zLine[i]=='"' || zLine[i]=='\\' ){ zOut[j++] = '\\'; }
        zOut[j++] = zLine[i];
        if( zLine[i]!='%' || zLine[i+1]=='%' || zLine[i+1]==0 ) continue;
        for(nC=1; zLine[i+nC] && zLine[i+nC]!='('; nC++){}
        if( zLine[i+nC]!='(' || !isalpha(zLine[i+nC-1]) ) continue;
        while( --nC ) zOut[j++] = zLine[++i];
        zArg[nArg++] = ',';

        k = 0; i++;
        while( (c = zLine[i])!=0 ){
          zArg[nArg++] = c;
          if( c==')' ){
            k--;
            if( k==0 ) break;
          }else if( c=='(' ){
            k++;
          }
          i++;
        }
      }
      zOut[j] = 0;
      if( !inPrint ){
        fprintf(out,"%*scgi_printf(\"%s\\n\"",indent-2,"", zOut);
        inPrint = 1;
      }else{
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