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/* PSPP - a program for statistical analysis.
Copyright (C) 2020 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include "tex-rendering.h"
#include "tex-glyphs.h"
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <gl/xalloc.h>
static void
tex_render (FILE *fp, const char *str)
{
fputs (str, fp);
fputc ('\n', fp);
}
#define BLOCK_SIZE 16
/* Reads an entire file FP and returns it as a string.
Any single instance of newline will be mutated to a space.
However multiple consecutive newlines will be mutated to
a single newline. */
static char *
read_whole_file (FILE *fp)
{
char *result = 0;
size_t bytes = 0;
size_t len = 0;
int c = -1;
int consecutive_nl = 0;
while ((c = fgetc (fp)) >= 0)
{
if (len <= bytes + 1)
{
result = xrealloc (result, len + BLOCK_SIZE);
memset (result + len, 0, BLOCK_SIZE);
len += BLOCK_SIZE;
}
if (c != '\n')
{
if (consecutive_nl > 1)
result[bytes++] = '\n';
if (consecutive_nl == 1)
result[bytes++] = ' ';
result[bytes++] = c;
}
if (c == '\n')
consecutive_nl++;
else
consecutive_nl = 0;
}
return result;
}
static long macro_insertion_point = 0;
static void
tex_preamble (FILE *fp, const char *str)
{
long where = ftell (fp);
fseek (fp, macro_insertion_point, SEEK_SET);
tex_render (fp, str);
fputc ('\n', fp);
macro_insertion_point = ftell (fp);
fseek (fp, where, SEEK_SET);
}
int
main (int argc, char **argv)
{
char *outfile = NULL;
int opt;
while ((opt = getopt (argc, argv, "o:")) != -1)
{
switch (opt)
{
case 'o':
outfile = argv[optind-1];
break;
default:
fprintf (stderr, "Usage: tex-strings -o <outfile> <infile1> <infile2> ... <infileN>\n");
return 1;
}
}
if (!outfile || optind >= argc)
{
fprintf (stderr, "Usage: tex-strings -o <outfile> <infile1> <infile2> ... <infileN>\n");
return 1;
}
FILE *fpout = fopen (outfile, "w");
if (!fpout)
{
int err = errno;
fprintf (stderr, "Cannot open output file %s: %s\n", outfile, strerror (err));
return 1;
}
struct hmap macros;
hmap_init (¯os);
fseek (fpout, 4096, SEEK_SET);
for (int arg = optind; arg < argc; ++arg)
{
FILE *fpin = fopen (argv[arg], "r");
if (!fpin)
{
int err = errno;
fprintf (stderr, "Cannot open input file %s: %s\n", argv[arg], strerror (err));
return 1;
}
tex_render (fpout, "\\noindent");
char *str = read_whole_file (fpin);
const char *s = str;
size_t n = strlen (str);
const char *frag = 0;
while (n > 0)
{
frag = u8_to_tex_fragments (&s, &n, ¯os);
fputs (frag, fpout);
}
free (str);
fclose (fpin);
tex_render(fpout, "\\par\\vskip 1em");
}
{
struct tex_macro *m;
struct tex_macro *next;
HMAP_FOR_EACH_SAFE (m, next, struct tex_macro, node, ¯os)
{
tex_preamble (fpout, tex_macro[m->index]);
free (m);
}
}
hmap_destroy (¯os);
tex_render (fpout, "\\bye");
fclose (fpout);
return 0;
}
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