teapot-spreadsheet/src/common/context.c

/* #includes */ /*{{{C}}}*//*{{{*/
#ifndef NO_POSIX_SOURCE
#undef _POSIX_SOURCE
#define _POSIX_SOURCE   1
#undef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 2
#endif

#ifdef DMALLOC
#include "dmalloc.h"
#endif

#include <assert.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>


#include "context.h"
#include "main.h"
#include "misc.h"
/*}}}*/

/* savecontext     -- save as ConTeXt table */ /*{{{*/
const char *savecontext(Sheet *sheet, const char *name, int body,
			const Location beg, const Location end,
			unsigned int *count)
{
  /* variables */ /*{{{*/
  FILE *fp=(FILE*)0; /* cause runtime error */
  Location w;
  char buf[1024];
  char num[20];
  char fullname[PATH_MAX];
  /*}}}*/
  
  /* asserts */ /*{{{*/
  assert(sheet != (Sheet*)0);
  assert(name != (const char*)0);
  /*}}}*/
  *count=0;
  w[X] = beg[X];
  for (w[Z]=beg[Z]; w[Z]<=end[Z]; ++(w[Z]))
    for (w[Y]=beg[Y]; w[Y]<=end[Y]; ++(w[Y]))
      if (shadowed(sheet, w)) return _("Shadowed cells in first column");
  if (!body && (fp=fopen(name,"w"))==(FILE*)0) return strerror(errno);
  for (w[Z]=beg[Z]; w[Z]<=end[Z]; ++(w[Z]))
  {
    if (body)
    /* open new file */ /*{{{*/
    {
      sprintf(num, ".%d", w[Z]);

      fullname[sizeof(fullname)-strlen(num)-1]='\0';
      (void)strncpy(fullname,name,sizeof(fullname)-strlen(num)-1);
      fullname[sizeof(fullname)-1]='\0';
      (void)strncat(fullname,num,sizeof(fullname)-strlen(num)-1);
      fullname[sizeof(fullname)-1]='\0';  
      if ((fp=fopen(fullname,"w"))==(FILE*)0) return strerror(errno);
    }
    /*}}}*/
    else
    /* print header */ /*{{{*/
    if (w[Z] == beg[Z])
    {
      if (fputs_close("\\starttext\n",fp)==EOF) return strerror(errno);
    }
    else
    {
      if (fputs_close("\\page\n",fp)==EOF) return strerror(errno);
    }
    /*}}}*/

    /* print bogus format */ /*{{{*/
    fprintf(fp,"\\starttable[");
    for (w[X]=beg[X]; w[X]<=end[X]; ++(w[X]))
      if (fputs_close("|l",fp)==EOF) return strerror(errno);
    fprintf(fp,"|]\n");
    /*}}}*/
    for (w[Y]=beg[Y]; w[Y]<=end[Y]; ++(w[Y]))
    /* print contents */ /*{{{*/
    {
      for (w[X]=beg[X]; w[X]<=end[X]; )
      {
        if (w[X] > beg[X] && fputs_close("\\NC", fp) == EOF)
	  return strerror(errno);
	Location mw; LOCATION_GETS(mw, w);
        for (++(mw[X]); ((size_t)mw[X]) < sheet->dim[X] && shadowed(sheet, mw);
	     ++(mw[X]));
        int multicols = mw[X] - w[X];
        if (multicols > 1) fprintf(fp,"\\use{%d}", multicols);
	Style cs = getstyle(sheet, w);
        switch (cs.adjust)
        {
          case LEFT:
	    if (fputs_close("\\JustLeft ", fp) == EOF) return strerror(errno);
          case RIGHT:
	    if (fputs_close("\\JustRight ", fp) == EOF) return strerror(errno);
          case CENTER:
	    if (fputs_close("\\JustCenter ", fp) == EOF) return strerror(errno);
          default: assert(0);
        }
        printvalue(buf, sizeof(buf), 0, DIRECT_STRING, cs.fform, cs.precision,
		   sheet, w);
/*        if (fputs_close("}{",fp)==EOF) return strerror(errno);*/
        if (cs.transparent)
        {
          if (fputs_close(buf,fp) == EOF) return strerror(errno);
        }
        else for (char *bufp = buf; *bufp; ++bufp) switch (*bufp)
        {
          case '%':
          case '$':
          case '&':
          case '#':
          case '_':
          case '{':
          case '}':
          case '~':
          case '^': if (fputc_close('\\',fp)==EOF || fputc_close(*bufp,fp)==EOF) return strerror(errno); break;
          case '\\': if (fputs_close("\\backslash ",fp)==EOF) return strerror(errno); break;
          default: if (fputc_close(*bufp,fp)==EOF) return strerror(errno);
        }
/*        if (fputc_close('}',fp)==EOF) return strerror(errno);*/
        w[X] += multicols;
        ++*count;
      }
      if (fputs_close(w[Y]<end[Y] ? "\\MR\n" : "\n\\stoptable\n",fp)==EOF) return strerror(errno);
    }
    /*}}}*/
    if (body)
    {
      if (fclose(fp)==EOF) return strerror(errno);
    }
    else
    {
      if (fputs_close("\n",fp)==EOF) return strerror(errno);
    }
  }
  if (!body)
  {
    if (fputs_close("\\stoptext\n",fp)==EOF) return strerror(errno);
    if (fclose(fp)==EOF) return strerror(errno);
  }
  return (const char*)0;
}
/*}}}*/