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1238b9d8cd
This will avoid a ninja-build from picking up a config.h generated by the autotools build (in the root build directory). Picking up the wrong config.h may lead to all kinds of subtle issues if the autotools run was done with different options than the cmake run.
140 lines
3.3 KiB
C
140 lines
3.3 KiB
C
/* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
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/*
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* utils.c: Various utility routines that should have been in glib.
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*
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* Authors:
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* Miguel de Icaza (miguel@gnu.org)
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* Jukka-Pekka Iivonen (iivonen@iki.fi)
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* Zbigniew Chyla (cyba@gnome.pl)
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* Morten Welinder (terra@gnome.org)
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*/
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#include <config.h>
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#include "go-glib-extras.h"
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#include <glib/gi18n-lib.h>
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#include <libxml/encoding.h>
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#include <stdlib.h>
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#include <math.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <fcntl.h>
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#include <errno.h>
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gint go_ascii_strcase_equal(gconstpointer v1, gconstpointer v2)
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{
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return g_ascii_strcasecmp((char const *) v1, (char const *) v2) == 0;
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}
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/* a char* hash function from ASU */
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guint go_ascii_strcase_hash(gconstpointer v)
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{
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unsigned const char *s = (unsigned const char *) v;
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unsigned const char *p;
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guint h = 0, g;
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for (p = s; *p != '\0'; p += 1)
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{
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h = (h << 4) + g_ascii_tolower(*p);
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if ((g = h & 0xf0000000))
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{
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h = h ^ (g >> 24);
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h = h ^ g;
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}
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}
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return h /* % M */;
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}
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const char *
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go_guess_encoding(const char *raw, size_t len, const char *user_guess,
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char **utf8_str)
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{
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int try;
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gboolean debug = FALSE;
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g_return_val_if_fail(raw != NULL, NULL);
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for (try = 1; 1; try++)
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{
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char const *guess = NULL;
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GError *error = NULL;
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char *utf8_data;
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switch (try)
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{
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case 1:
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guess = user_guess;
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break;
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case 2:
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g_get_charset(&guess);
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break;
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case 3:
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{
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xmlCharEncoding enc = xmlDetectCharEncoding(
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(const unsigned char*) raw, len);
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switch (enc)
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{
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case XML_CHAR_ENCODING_ERROR:
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case XML_CHAR_ENCODING_NONE:
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break;
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case XML_CHAR_ENCODING_UTF16LE:
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/* Default would give "UTF-16". */
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guess = "UTF-16LE";
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break;
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case XML_CHAR_ENCODING_UTF16BE:
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/* Default would give "UTF-16". */
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guess = "UTF-16BE";
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break;
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default:
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guess = xmlGetCharEncodingName(enc);
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}
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break;
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}
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case 4:
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guess = "ASCII";
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break;
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case 5:
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guess = "ISO-8859-1";
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break;
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case 6:
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guess = "UTF-8";
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break;
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default:
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return NULL;
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}
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if (!guess)
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continue;
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if (debug)
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g_print("Trying %s as encoding.\n", guess);
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utf8_data = g_convert(raw, len, "UTF-8", guess,
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NULL, NULL, &error);
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if (!error)
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{
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/*
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* We can actually fail this test when guess is UTF-8,
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* see #401588.
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*/
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if (!g_utf8_validate(utf8_data, -1, NULL))
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continue;
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if (debug)
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g_print("Guessed %s as encoding.\n", guess);
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if (utf8_str)
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*utf8_str = utf8_data;
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else
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g_free(utf8_data);
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return guess;
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}
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g_error_free(error);
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}
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}
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