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/*
* COPYRIGHT
*
* pcb-rnd, interactive printed circuit board design
*
* tedax IO plugin - low level parser, similar to the reference implementation
* pcb-rnd Copyright (C) 2017 Tibor 'Igor2' Palinkas
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Contact:
* Project page: http://repo.hu/projects/pcb-rnd
* lead developer: http://repo.hu/projects/pcb-rnd/contact.html
* mailing list: pcb-rnd (at) list.repo.hu (send "subscribe")
*/
#include "config.h"
#include <assert.h>
#include "parse.h"
#include <librnd/core/error.h>
#include <librnd/core/compat_misc.h>
int tedax_getline(FILE *f, char *buff, int buff_size, char *argv[], int argv_size)
{
int argc;
for(;;) {
char *s, *o;
if (fgets(buff, buff_size, f) == NULL)
return -1;
s = buff;
if (*s == '#') /* comment */
continue;
ltrim(s);
rtrim(s);
if (*s == '\0') /* empty line */
continue;
/* argv split */
for(argc = 0, o = argv[0] = s; *s != '\0';) {
if (*s == '\\') {
s++;
switch(*s) {
case 'r': *o = '\r'; break;
case 'n': *o = '\n'; break;
case 't': *o = '\t'; break;
default: *o = *s;
}
o++;
s++;
continue;
}
if ((argc+1 < argv_size) && ((*s == ' ') || (*s == '\t'))) {
*o = *s = '\0';
s++;
o++;
while((*s == ' ') || (*s == '\t'))
s++;
argc++;
argv[argc] = o;
}
else {
*o = *s;
s++;
o++;
}
}
*o = '\0';
return argc+1; /* valid line, split up */
}
return -1; /* can't get here */
}
int tedax_seek_hdr(FILE *f, char *buff, int buff_size, char *argv[], int argv_size)
{
int argc;
/* look for the header */
if ((argc = tedax_getline(f, buff, buff_size, argv, argv_size)) < 2) {
rnd_message(RND_MSG_ERROR, "Can't find tEDAx header (no line)\n");
return -1;
}
if ((argv[1] == NULL) || (rnd_strcasecmp(argv[0], "tEDAx") != 0) || (rnd_strcasecmp(argv[1], "v1") != 0)) {
rnd_message(RND_MSG_ERROR, "Can't find tEDAx header (wrong line)\n");
return -1;
}
return argc;
}
int tedax_seek_block(FILE *f, const char *blk_name, const char *blk_ver, const char *blk_id, int silent, char *buff, int buff_size, char *argv[], int argv_size)
{
int argc;
/* seek block begin */
while((argc = tedax_getline(f, buff, buff_size, argv, argv_size)) >= 0)
if ((argc > 2) && (strcmp(argv[0], "begin") == 0) && (strcmp(argv[1], blk_name) == 0) && ((blk_ver == NULL) || (strcmp(argv[2], blk_ver) == 0)) && ((blk_id == NULL) || (strcmp(argv[3], blk_id) == 0)))
break;
if (argc < 2) {
if (!silent)
rnd_message(RND_MSG_ERROR, "Can't find %s %s block in tEDAx\n", blk_ver, blk_name);
return -1;
}
return argc;
}
void tedax_fnprint_escape(FILE *f, const char *val, int len)
{
if ((val == NULL) || (*val == '\0')) {
fputc('-', f);
return;
}
for(; (*val != '\0') && (len > 0); val++,len--) {
switch(*val) {
case '\\': fputc('\\', f); fputc('\\', f); break;
case '\n': fputc('\\', f); fputc('n', f); break;
case '\r': fputc('\\', f); fputc('r', f); break;
case '\t': fputc('\\', f); fputc('t', f); break;
case ' ': fputc('\\', f); fputc(' ', f); break;
default:
fputc(*val, f);
}
}
}
void tedax_fprint_escape(FILE *f, const char *val)
{
tedax_fnprint_escape(f, val, 510);
}
#define APPEND(c) \
do { \
if (dstlen == 0) { \
res = -1; \
goto quit; \
} \
*d = c; \
d++; \
dstlen--; \
} while(0)
int tedax_strncpy_escape(char *dst, int dstlen, const char *val)
{
int res = 0;
char *d = dst;
assert(dstlen > 2);
if ((val == NULL) || (*val == '\0')) {
dst[0] = '-';
dst[1] = '\0';
return 0;
}
dstlen--; /* one for \0 */
for(; *val != '\0'; val++) {
switch(*val) {
case '\\': APPEND('\\'); APPEND('\\'); break;
case '\n': APPEND('\\'); APPEND('n'); break;
case '\r': APPEND('\\'); APPEND('r'); break;
case '\t': APPEND('\\'); APPEND('t'); break;
case ' ': APPEND('\\'); APPEND(' '); break;
default:
APPEND(*val);
}
}
quit:;
*d = '\0';
return res;
}
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