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/*
* sysobj - https://github.com/bp0/verbose-spork
* Copyright (C) 2018 Burt P. <pburt0@gmail.com>
*
* 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.
*
*/
#include "util_ids.h"
#include <glib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#define ids_msg(msg, ...) fprintf (stderr, "[%s] " msg "\n", __FUNCTION__, ##__VA_ARGS__) /**/
ids_query *ids_query_new(const gchar *qpath) {
ids_query *s = g_new0(ids_query, 1);
s->qpath = qpath ? g_strdup(qpath) : NULL;
return s;
}
void ids_query_free(ids_query *s) {
if (s) g_free(s->qpath);
g_free(s);
}
/* c001 < C 01 */
//TODO: compare more than the first char
static int ids_cmp(const char *s1, const char *s2) {
int cmp = (s2 ? 1 : 0) - (s1 ? 1 : 0);
if (cmp == 0 && isalpha(*s1) && isalpha(*s2))
cmp = (islower(*s2) ? 1 : 0) - (islower(*s1) ? 1 : 0);
if (cmp == 0)
return g_strcmp0(s1, s2);
else
return cmp;
}
/* Given a qpath "/X/Y/Z", find names as:
* X <name> ->result[0]
* \tY <name> ->result[1]
* \t\tZ <name> ->result[2]
*
* Works with:
* - pci.ids "<vendor>/<device>/<subvendor> <subdevice>" or "C <class>/<subclass>/<prog-if>"
* - arm.ids "<implementer>/<part>"
* - sdio.ids "<vendor>/<device>", "C <class>"
* - usb.ids "<vendor>/<device>", "C <class>" etc
*/
long scan_ids_file(const gchar *file, const gchar *qpath, ids_query_result *result, long start_offset) {
gchar **qparts = NULL;
gchar buff[IDS_LOOKUP_BUFF_SIZE] = "";
ids_query_result ret = {};
gchar *p = NULL;
FILE *fd;
int tabs;
int qdepth;
int qpartlen[IDS_LOOKUP_MAX_DEPTH];
long last_root_fpos = -1, fpos, line = -1;
if (!qpath)
return -1;
fd = fopen(file, "r");
if (!fd) {
ids_msg("file could not be read: %s", file);
return -1;
}
qparts = g_strsplit(qpath, "/", -1);
qdepth = g_strv_length(qparts);
if (qdepth > IDS_LOOKUP_MAX_DEPTH) {
ids_msg("qdepth (%d) > ids_max_depth (%d) for %s", qdepth, IDS_LOOKUP_MAX_DEPTH, qpath);
qdepth = IDS_LOOKUP_MAX_DEPTH;
}
for(int i = 0; i < qdepth; i++)
qpartlen[i] = strlen(qparts[i]);
if (start_offset > 0)
fseek(fd, start_offset, SEEK_SET);
for (fpos = ftell(fd); fgets(buff, IDS_LOOKUP_BUFF_SIZE, fd); fpos = ftell(fd)) {
p = strchr(buff, '\n');
if (!p)
ids_msg("line longer than IDS_LOOKUP_BUFF_SIZE (%d), file: %s, offset: %ld", IDS_LOOKUP_BUFF_SIZE, file, fpos);
line++;
/* line ends at comment */
p = strchr(buff, '#');
if (p) *p = 0;
/* trim trailing white space */
if (!p) p = buff + strlen(buff);
p--;
while(p > buff && isspace((unsigned char)*p)) p--;
*(p+1) = 0;
p = buff;
if (buff[0] == 0) continue; /* empty line */
if (buff[0] == '\n') continue; /* empty line */
/* scan for fields */
tabs = 0;
while(*p == '\t') { tabs++; p++; }
if (tabs >= qdepth) continue; /* too deep */
if (tabs != 0 && !ret.results[tabs-1])
continue; /* not looking at this depth, yet */
//ids_msg("looking at (%d) %s...", tabs, p);
if (g_str_has_prefix(p, qparts[tabs])
&& isspace(*(p + qpartlen[tabs])) ) {
/* found */
p += qpartlen[tabs];
while(isspace((unsigned char)*p)) p++; /* ffwd */
if (tabs == 0) {
last_root_fpos = fpos;
ret.results[tabs] = ret._strs;
strncpy(ret.results[tabs], p, IDS_LOOKUP_BUFF_SIZE-1);
} else {
ret.results[tabs] = ret.results[tabs-1] + strlen(ret.results[tabs-1]) + 1;
strncpy(ret.results[tabs], p, IDS_LOOKUP_BUFF_SIZE-1);
}
continue;
}
if (ids_cmp(p, qparts[tabs]) == 1) {
//ids_msg("will not be found p = %s (%d) qparts[tabs] = %s", p, qparts[tabs]);
goto ids_lookup_done; /* will not be found */
}
} /* for each line */
ids_lookup_done:
//ids_msg("bailed at line %ld...", line);
fclose(fd);
if (result) {
memcpy(result, &ret, sizeof(ids_query_result));
for(int i = 0; result->results[i]; i++)
result->results[i] = result->_strs + (ret.results[i] - ret._strs);
return last_root_fpos;
}
return last_root_fpos;
}
static gint _ids_query_list_cmp(const ids_query *ql1, const ids_query *ql2) {
return g_strcmp0(ql1->qpath, ql2->qpath);
}
long scan_ids_file_list(const gchar *file, ids_query_list query_list, long start_offset) {
GSList *tmp = g_slist_copy(query_list);
tmp = g_slist_sort(tmp, (GCompareFunc)_ids_query_list_cmp);
long offset = start_offset;
for (GSList *l = query_list; l; l = l->next) {
ids_query *q = l->data;
offset = scan_ids_file(file, q->qpath, &(q->result), offset);
if (offset == -1)
break;
}
g_slist_free(tmp);
return offset;
}
int query_list_count_found(ids_query_list query_list) {
long count = 0;
for (GSList *l = query_list; l; l = l->next) {
ids_query *q = l->data;
if (q->result.results[0]) count++;
}
return count;
}
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