1
0
mirror of git://projects.qi-hardware.com/eda-tools.git synced 2024-12-23 16:25:10 +02:00
eda-tools/genex/libs.c
Werner Almesberger 024ffd4e47 genex/libs.c: skip ~ at the beginning of a component name
The ~ means that the component name is invisible.
2012-04-17 09:53:02 -03:00

169 lines
2.9 KiB
C

/*
* libs.c - Component libraries
*
* Copyright 2012 by Werner Almesberger
*
* 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.
*/
#define _GNU_SOURCE /* for strcasecmp */
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <sys/types.h>
#include <dirent.h>
#include "util.h"
#include "libs.h"
struct entry {
struct name *names;
int units;
struct entry *next;
};
static struct lib {
const char *path;
struct entry *comps;
struct lib *next;
} *libs = NULL;
const char *lookup_sym(const char *name, const struct name **names, int *units)
{
const struct lib *lib;
const struct entry *e;
for (lib = libs; lib; lib = lib->next)
for (e = lib->comps; e; e = e->next)
if (!strcasecmp(e->names->s, name)) {
if (names)
*names = e->names;
if (units)
*units = e->units;
return lib->path;
}
return NULL;
}
static const char *field(const char *s, int n)
{
while (n-- && *s) {
while (*s && !isspace(*s))
s++;
while (*s && isspace(*s))
s++;
}
return *s ? s : NULL;
}
static void add_name(struct entry *e, char *s)
{
char *nl;
struct name **p;
nl = strchr(s, '\n');
if (nl)
*nl = 0;
for (p = &e->names; *p; p = &(*p)->next);
*p = alloc_type(struct name);
(*p)->s = stralloc(s);
(*p)->next = NULL;
}
void add_lib(const char *path)
{
FILE *file;
struct lib *lib;
struct entry *e = NULL;
char buf[1024]; /* @@@ */
char *name, *spc;
const char *s;
file = fopen(path, "r");
if (!file) {
perror(path);
exit(1);
}
lib = alloc_type(struct lib);
lib->path = stralloc(path);
lib->comps = NULL;
lib->next = libs;
libs = lib;
while (fgets(buf, sizeof(buf), file)) {
if (!strncmp(buf, "ALIAS ", 6) && e)
add_name(e, buf+6);
if (strncmp(buf, "DEF ", 4))
continue;
s = field(buf, 7);
if (!s) {
fprintf(stderr, "DEF record lacks units field in %s\n",
path);
exit(1);
}
name = buf+4;
if (*name == '~')
name++;
spc = strchr(name, ' ');
if (!spc) {
fprintf(stderr, "invalid DEF line in %s\n", path);
exit(1);
}
*spc = 0;
e = alloc_type(struct entry);
e->names = NULL;
add_name(e, name);
e->units = atoi(s);
if (!e->units) {
fprintf(stderr, "invalid number of units in %s\n",
path);
exit(1);
}
e->next = lib->comps;
lib->comps = e;
}
fclose(file);
}
void add_libdir(const char *path)
{
DIR *dir;
const struct dirent *de;
size_t len;
char *tmp;
dir = opendir(path);
if (!dir) {
perror(path);
exit(1);
}
while (1) {
de = readdir(dir);
if (!de)
break;
len = strlen(de->d_name);
if (len < 4)
continue;
if (strcmp(de->d_name+len-4, ".lib"))
continue;
if (asprintf(&tmp, "%s/%s", path, de->d_name) < 0) {
perror("asprintf");
exit(1);
}
add_lib(tmp);
}
closedir(dir);
}