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-rw-r--r--src/charset/aliases.c361
1 files changed, 0 insertions, 361 deletions
diff --git a/src/charset/aliases.c b/src/charset/aliases.c
deleted file mode 100644
index dcf6de2..0000000
--- a/src/charset/aliases.c
+++ /dev/null
@@ -1,361 +0,0 @@
-/*
- * This file is part of Hubbub.
- * Licensed under the MIT License,
- * http://www.opensource.org/licenses/mit-license.php
- * Copyright 2007 John-Mark Bell <jmb@netsurf-browser.org>
- */
-
-#include <ctype.h>
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "charset/aliases.h"
-
-struct alias {
- struct alias *next;
- hubbub_aliases_canon *canon;
- uint16_t name_len;
- char name[1];
-};
-
-#define HASH_SIZE (43)
-static hubbub_aliases_canon *canon_tab[HASH_SIZE];
-static struct alias *alias_tab[HASH_SIZE];
-
-static hubbub_error hubbub_create_alias(const char *alias,
- hubbub_aliases_canon *c, hubbub_alloc alloc, void *pw);
-static hubbub_aliases_canon *hubbub_create_canon(const char *canon,
- uint16_t mibenum, hubbub_alloc alloc, void *pw);
-static uint32_t hubbub_hash_val(const char *alias, size_t len);
-
-/**
- * Create alias data from Aliases file
- *
- * \param filename The path to the Aliases file
- * \param alloc Memory (de)allocation function
- * \param pw Pointer to client-specific private data (may be NULL)
- * \return HUBBUB_OK on success, appropriate error otherwise.
- */
-hubbub_error hubbub_aliases_create(const char *filename,
- hubbub_alloc alloc, void *pw)
-{
- char buf[300];
- FILE *fp;
-
- if (filename == NULL || alloc == NULL)
- return HUBBUB_BADPARM;
-
- fp = fopen(filename, "r");
- if (fp == NULL)
- return HUBBUB_FILENOTFOUND;
-
- while (fgets(buf, sizeof buf, fp)) {
- char *p, *aliases = 0, *mib, *end;
- hubbub_aliases_canon *cf;
-
- if (buf[0] == 0 || buf[0] == '#')
- /* skip blank lines or comments */
- continue;
-
- buf[strlen(buf) - 1] = 0; /* lose terminating newline */
- end = buf + strlen(buf);
-
- /* find end of canonical form */
- for (p = buf; *p && !isspace(*p) && !iscntrl(*p); p++)
- ; /* do nothing */
- if (p >= end)
- continue;
- *p++ = '\0'; /* terminate canonical form */
-
- /* skip whitespace */
- for (; *p && isspace(*p); p++)
- ; /* do nothing */
- if (p >= end)
- continue;
- mib = p;
-
- /* find end of mibenum */
- for (; *p && !isspace(*p) && !iscntrl(*p); p++)
- ; /* do nothing */
- if (p < end)
- *p++ = '\0'; /* terminate mibenum */
-
- cf = hubbub_create_canon(buf, atoi(mib), alloc, pw);
- if (cf == NULL)
- continue;
-
- /* skip whitespace */
- for (; p < end && *p && isspace(*p); p++)
- ; /* do nothing */
- if (p >= end)
- continue;
- aliases = p;
-
- while (p < end) {
- /* find end of alias */
- for (; *p && !isspace(*p) && !iscntrl(*p); p++)
- ; /* do nothing */
- if (p > end)
- /* stop if we've gone past the end */
- break;
- /* terminate current alias */
- *p++ = '\0';
-
- if (hubbub_create_alias(aliases, cf,
- alloc, pw) != HUBBUB_OK)
- break;
-
- /* in terminating, we may have advanced
- * past the end - check this here */
- if (p >= end)
- break;
-
- /* skip whitespace */
- for (; *p && isspace(*p); p++)
- ; /* do nothing */
-
- if (p >= end)
- /* gone past end => stop */
- break;
-
- /* update pointer to current alias */
- aliases = p;
- }
- }
-
- fclose(fp);
-
- return HUBBUB_OK;
-}
-
-/**
- * Free all alias data
- *
- * \param alloc Memory (de)allocation function
- * \param pw Pointer to client-specific private data
- */
-void hubbub_aliases_destroy(hubbub_alloc alloc, void *pw)
-{
- hubbub_aliases_canon *c, *d;
- struct alias *a, *b;
- int i;
-
- for (i = 0; i != HASH_SIZE; i++) {
- for (c = canon_tab[i]; c; c = d) {
- d = c->next;
- alloc(c, 0, pw);
- }
- canon_tab[i] = NULL;
-
- for (a = alias_tab[i]; a; a = b) {
- b = a->next;
- alloc(a, 0, pw);
- }
- alias_tab[i] = NULL;
- }
-}
-
-/**
- * Retrieve the MIB enum value assigned to an encoding name
- *
- * \param alias The alias to lookup
- * \param len The length of the alias string
- * \return The MIB enum value, or 0 if not found
- */
-uint16_t hubbub_mibenum_from_name(const char *alias, size_t len)
-{
- hubbub_aliases_canon *c;
-
- if (alias == NULL)
- return 0;
-
- c = hubbub_alias_canonicalise(alias, len);
- if (c == NULL)
- return 0;
-
- return c->mib_enum;
-}
-
-/**
- * Retrieve the canonical name of an encoding from the MIB enum
- *
- * \param mibenum The MIB enum value
- * \return Pointer to canonical name, or NULL if not found
- */
-const char *hubbub_mibenum_to_name(uint16_t mibenum)
-{
- int i;
- hubbub_aliases_canon *c;
-
- for (i = 0; i != HASH_SIZE; i++)
- for (c = canon_tab[i]; c; c = c->next)
- if (c->mib_enum == mibenum)
- return c->name;
-
- return NULL;
-}
-
-
-/**
- * Retrieve the canonical form of an alias name
- *
- * \param alias The alias name
- * \param len The length of the alias name
- * \return Pointer to canonical form or NULL if not found
- */
-hubbub_aliases_canon *hubbub_alias_canonicalise(const char *alias,
- size_t len)
-{
- uint32_t hash;
- hubbub_aliases_canon *c;
- struct alias *a;
-
- if (alias == NULL)
- return NULL;
-
- hash = hubbub_hash_val(alias, len);
-
- for (c = canon_tab[hash]; c; c = c->next)
- if (c->name_len == len &&
- strncasecmp(c->name, alias, len) == 0)
- break;
- if (c)
- return c;
-
- for (a = alias_tab[hash]; a; a = a->next)
- if (a->name_len == len &&
- strncasecmp(a->name, alias, len) == 0)
- break;
- if (a)
- return a->canon;
-
- return NULL;
-}
-
-
-/**
- * Create an alias
- *
- * \param alias The alias name
- * \param c The canonical form
- * \param alloc Memory (de)allocation function
- * \param pw Pointer to client-specific private data (may be NULL)
- * \return HUBBUB_OK on success, appropriate error otherwise
- */
-hubbub_error hubbub_create_alias(const char *alias, hubbub_aliases_canon *c,
- hubbub_alloc alloc, void *pw)
-{
- struct alias *a;
- uint32_t hash;
-
- if (alias == NULL || c == NULL || alloc == NULL)
- return HUBBUB_BADPARM;
-
- a = alloc(NULL, sizeof(struct alias) + strlen(alias) + 1, pw);
- if (a == NULL)
- return HUBBUB_NOMEM;
-
- a->canon = c;
- a->name_len = strlen(alias);
- strcpy(a->name, alias);
- a->name[a->name_len] = '\0';
-
- hash = hubbub_hash_val(alias, a->name_len);
-
- a->next = alias_tab[hash];
- alias_tab[hash] = a;
-
- return HUBBUB_OK;
-}
-
-/**
- * Create a canonical form
- *
- * \param canon The canonical name
- * \param mibenum The MIB enum value
- * \param alloc Memory (de)allocation function
- * \param pw Pointer to client-specific private data (may be NULL)
- * \return Pointer to canonical form or NULL on error
- */
-hubbub_aliases_canon *hubbub_create_canon(const char *canon,
- uint16_t mibenum, hubbub_alloc alloc, void *pw)
-{
- hubbub_aliases_canon *c;
- uint32_t hash, len;
-
- if (canon == NULL || alloc == NULL)
- return NULL;
-
- len = strlen(canon);
-
- c = alloc(NULL, sizeof(hubbub_aliases_canon) + len + 1, pw);
- if (c == NULL)
- return NULL;
-
- c->mib_enum = mibenum;
- c->name_len = len;
- strcpy(c->name, canon);
- c->name[len] = '\0';
-
- hash = hubbub_hash_val(canon, len);
-
- c->next = canon_tab[hash];
- canon_tab[hash] = c;
-
- return c;
-}
-
-/**
- * Hash function
- *
- * \param alias String to hash
- * \return The hashed value
- */
-uint32_t hubbub_hash_val(const char *alias, size_t len)
-{
- const char *s = alias;
- uint32_t h = 5381;
-
- if (alias == NULL)
- return 0;
-
- while (len--)
- h = (h * 33) ^ (*s++ & ~0x20); /* case insensitive */
-
- return h % HASH_SIZE;
-}
-
-
-#ifndef NDEBUG
-/**
- * Dump all alias data to stdout
- */
-void hubbub_aliases_dump(void)
-{
- hubbub_aliases_canon *c;
- struct alias *a;
- int i;
- size_t size = 0;
-
- for (i = 0; i != HASH_SIZE; i++) {
- for (c = canon_tab[i]; c; c = c->next) {
- printf("%d %s\n", i, c->name);
- size += offsetof(hubbub_aliases_canon, name) +
- c->name_len;
- }
-
- for (a = alias_tab[i]; a; a = a->next) {
- printf("%d %s\n", i, a->name);
- size += offsetof(struct alias, name) + a->name_len;
- }
- }
-
- size += (sizeof(canon_tab) / sizeof(canon_tab[0]));
- size += (sizeof(alias_tab) / sizeof(alias_tab[0]));
-
- printf("%u\n", (unsigned int) size);
-}
-#endif
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