mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-11-25 07:49:38 +03:00
135 lines
2.5 KiB
C
135 lines
2.5 KiB
C
/*
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* This file is part of NetSurf, http://netsurf.sourceforge.net/
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* Licensed under the GNU General Public License,
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* http://www.opensource.org/licenses/gpl-license
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* Copyright 2003 James Bursa <bursa@users.sourceforge.net>
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include "netsurf/utils/log.h"
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#include "netsurf/utils/messages.h"
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#include "netsurf/utils/utils.h"
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/* We store the messages in a fixed-size hash table. */
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#define HASH_SIZE 77
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struct entry {
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const char *key;
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const char *value;
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struct entry *next; /* next in this hash chain */
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};
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static struct entry *table[HASH_SIZE];
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static unsigned int messages_hash(const char *s);
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/**
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* messages_load -- read a messages file into the hash table
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*/
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void messages_load(const char *path)
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{
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char s[300];
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FILE *fp;
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fp = fopen(path, "r");
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if (fp == 0) {
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LOG(("failed to open file '%s'", path));
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return;
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}
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while (fgets(s, 300, fp) != 0) {
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char *colon;
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unsigned int slot;
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struct entry *entry;
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if (s[0] == 0 || s[0] == '#')
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continue;
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colon = strchr(s, ':');
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if (colon == 0)
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continue;
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s[strlen(s) - 1] = 0; /* remove \n at end */
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*colon = 0; /* terminate key */
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entry = xcalloc(1, sizeof(*entry));
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entry->key = xstrdup(s);
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entry->value = xstrdup(colon + 1);
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slot = messages_hash(entry->key);
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entry->next = table[slot];
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table[slot] = entry;
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}
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fclose(fp);
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}
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/**
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* messages_get -- fast lookup of a message by key
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*/
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const char *messages_get(const char *key)
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{
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char *colon;
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const char *value = key;
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char key2[40];
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unsigned int slot, len;
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struct entry *entry;
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colon = strchr(key, ':');
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if (colon != 0) {
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/* fallback appended to key */
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value = colon + 1;
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len = colon - key;
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if (39 < len)
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len = 39;
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strncpy(key2, key, len);
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key2[len] = 0;
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key = key2;
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}
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slot = messages_hash(key);
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for (entry = table[slot];
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entry != 0 && strcasecmp(entry->key, key) != 0;
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entry = entry->next)
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;
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if (entry == 0) {
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LOG(("using fallback for key '%s'", key));
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return value;
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}
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return entry->value;
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}
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/**
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* messages_hash -- hash function for keys
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*/
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unsigned int messages_hash(const char *s)
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{
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unsigned int z = 0;
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if (s == 0)
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return 0;
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for (; *s != 0; s++)
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z += *s & 0x1f; /* lower 5 bits, case insensitive */
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return (z % (HASH_SIZE - 1)) + 1;
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}
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/**
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* messages_dump -- dump contents of hash table
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*/
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void messages_dump(void)
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{
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unsigned int i;
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for (i = 0; i != HASH_SIZE; i++) {
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struct entry *entry;
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for (entry = table[i]; entry != 0; entry = entry->next)
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printf("%s:%s\n", entry->key, entry->value);
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}
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}
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