+++ /dev/null
-/* xgettext AppData schema file backend.
- Copyright (C) 2002-2003, 2005-2009, 2013, 2015 Free Software
- Foundation, Inc.
-
- Written by Philip Withnall <philip.withnall@collabora.co.uk>, 2015.
- Based on GSettings extractor by Daiki Ueno <ueno@gnu.org>, 2013.
-
- 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 3 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, see <http://www.gnu.org/licenses/>. */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-/* Specification. */
-#include "x-appdata.h"
-
-#include <errno.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "message.h"
-#include "xgettext.h"
-#include "error.h"
-#include "xerror.h"
-#include "xvasprintf.h"
-#include "basename.h"
-#include "progname.h"
-#include "xalloc.h"
-#include "hash.h"
-#include "po-charset.h"
-#include "gettext.h"
-#include "libexpat-compat.h"
-
-#define _(s) gettext(s)
-
-
-/* AppData is an XML format for describing application information.
- The syntax is described here:
- http://people.freedesktop.org/~hughsient/appdata/
- Translation is described in the ITS file:
- http://people.freedesktop.org/~hughsient/appdata/#translation */
-
-
-/* ====================== Keyword set customization. ====================== */
-
-/* If true extract all strings. */
-static bool extract_all = false;
-
-
-/* ============================= XML parsing. ============================= */
-
-#if DYNLOAD_LIBEXPAT || HAVE_LIBEXPAT
-
-/* Accumulator for the extracted messages. */
-static message_list_ty *mlp;
-
-/* Logical filename, used to label the extracted messages. */
-static char *logical_file_name;
-
-/* XML parser. */
-static XML_Parser parser;
-
-enum whitespace_type_ty
-{
- none,
- normalize,
- strip
-};
-typedef enum whitespace_type_ty whitespace_type_ty;
-
-struct element_state
-{
- bool is_component; /* the <component> element */
- bool is_description; /* the <description> element */
- bool extract_string;
- whitespace_type_ty whitespace;
- int lineno;
- char *buffer;
- size_t bufmax;
- size_t buflen;
-};
-static struct element_state *stack;
-static size_t stack_size;
-
-static char *
-normalize_whitespace (const char *text, whitespace_type_ty whitespace)
-{
- if (whitespace == none)
- return xstrdup (text);
- else
- {
- char *result, *p;
-
- /* Strip whitespaces at the beginning/end of the text. */
- result = xstrdup (text + strspn (text, " \t\n"));
- for (p = result + strlen (result);
- p > result && (*p == '\0' || *p == ' ' || *p == '\t' || *p == '\n');
- p--)
- ;
- if (p > result)
- *++p = '\0';
-
- /* Normalize whitespaces within the text. */
- if (whitespace == normalize)
- {
- char *end = result + strlen (result);
- for (p = result; *p != '\0';)
- {
- size_t len = strspn (p, " \t\n");
- if (len > 0)
- {
- *p = ' ';
- memmove (p + 1, p + len, end - (p + len));
- end -= len - 1;
- *end = '\0';
- p++;
- }
- p += strcspn (p, " \t\n");
- }
- }
- return result;
- }
-}
-
-/* Ensures stack_size >= size. */
-static void
-ensure_stack_size (size_t size)
-{
- if (size > stack_size)
- {
- stack_size = 2 * stack_size;
- if (stack_size < size)
- stack_size = size;
- stack =
- (struct element_state *)
- xrealloc (stack, stack_size * sizeof (struct element_state));
- }
-}
-
-static size_t stack_depth;
-
-/* Callback called when <element> is seen. */
-static void
-start_element_handler (void *userData, const char *name,
- const char **attributes)
-{
- struct element_state *p;
-
- /* Increase stack depth. */
- stack_depth++;
- ensure_stack_size (stack_depth + 1);
-
- /* Don't extract a string for the containing element. */
- stack[stack_depth - 1].extract_string = false;
-
- p = &stack[stack_depth];
- p->is_component = (strcmp (name, "component") == 0);
- p->is_description = (strcmp (name, "description") == 0);
- p->extract_string = extract_all;
-
- if (!p->extract_string)
- {
- bool has_translatable = false;
- whitespace_type_ty whitespace = none;
- if ((stack_depth == 2
- && stack[1].is_component
- && (strcmp (name, "name") == 0
- || strcmp (name, "summary") == 0))
- || (stack_depth > 2
- && stack[1].is_component
- && stack[2].is_description))
- {
- has_translatable = true;
- whitespace = normalize;
- }
-
- p->extract_string = has_translatable;
- p->whitespace = whitespace;
- }
-
- p->lineno = XML_GetCurrentLineNumber (parser);
- p->buffer = NULL;
- p->bufmax = 0;
- p->buflen = 0;
- if (!p->extract_string)
- savable_comment_reset ();
-}
-
-/* Callback called when </element> is seen. */
-static void
-end_element_handler (void *userData, const char *name)
-{
- struct element_state *p = &stack[stack_depth];
-
- /* Actually extract string. */
- if (p->extract_string)
- {
- /* Don't extract the empty string. */
- if (p->buflen > 0)
- {
- lex_pos_ty pos;
-
- if (p->buflen == p->bufmax)
- p->buffer = (char *) xrealloc (p->buffer, p->buflen + 1);
- p->buffer[p->buflen] = '\0';
-
- pos.file_name = logical_file_name;
- pos.line_number = p->lineno;
-
- if (p->buffer != NULL)
- {
- remember_a_message (mlp, NULL,
- normalize_whitespace (p->buffer,
- p->whitespace),
- null_context, &pos,
- NULL, savable_comment);
- }
- }
- }
-
- /* Free memory for this stack level. */
- if (p->buffer != NULL)
- free (p->buffer);
-
- /* Decrease stack depth. */
- stack_depth--;
-
- savable_comment_reset ();
-}
-
-/* Callback called when some text is seen. */
-static void
-character_data_handler (void *userData, const char *s, int len)
-{
- struct element_state *p = &stack[stack_depth];
-
- /* Accumulate character data. */
- if (len > 0)
- {
- if (p->buflen + len > p->bufmax)
- {
- p->bufmax = 2 * p->bufmax;
- if (p->bufmax < p->buflen + len)
- p->bufmax = p->buflen + len;
- p->buffer = (char *) xrealloc (p->buffer, p->bufmax);
- }
- memcpy (p->buffer + p->buflen, s, len);
- p->buflen += len;
- }
-}
-
-/* Callback called when some comment text is seen. */
-static void
-comment_handler (void *userData, const char *data)
-{
- /* Split multiline comment into lines, and remove leading and trailing
- whitespace. */
- char *copy = xstrdup (data);
- char *p;
- char *q;
-
- for (p = copy; (q = strchr (p, '\n')) != NULL; p = q + 1)
- {
- while (p[0] == ' ' || p[0] == '\t')
- p++;
- while (q > p && (q[-1] == ' ' || q[-1] == '\t'))
- q--;
- *q = '\0';
- savable_comment_add (p);
- }
- q = p + strlen (p);
- while (p[0] == ' ' || p[0] == '\t')
- p++;
- while (q > p && (q[-1] == ' ' || q[-1] == '\t'))
- q--;
- *q = '\0';
- savable_comment_add (p);
- free (copy);
-}
-
-
-static void
-do_extract_appdata (FILE *fp,
- const char *real_filename, const char *logical_filename,
- msgdomain_list_ty *mdlp)
-{
- mlp = mdlp->item[0]->messages;
-
- /* expat feeds us strings in UTF-8 encoding. */
- xgettext_current_source_encoding = po_charset_utf8;
-
- logical_file_name = xstrdup (logical_filename);
-
- parser = XML_ParserCreate (NULL);
- if (parser == NULL)
- error (EXIT_FAILURE, 0, _("memory exhausted"));
-
- XML_SetElementHandler (parser, start_element_handler, end_element_handler);
- XML_SetCharacterDataHandler (parser, character_data_handler);
- XML_SetCommentHandler (parser, comment_handler);
-
- stack_depth = 0;
-
- while (!feof (fp))
- {
- char buf[4096];
- int count = fread (buf, 1, sizeof buf, fp);
-
- if (count == 0)
- {
- if (ferror (fp))
- error (EXIT_FAILURE, errno, _("\
-error while reading \"%s\""), real_filename);
- /* EOF reached. */
- break;
- }
-
- if (XML_Parse (parser, buf, count, 0) == 0)
- error (EXIT_FAILURE, 0, _("%s:%lu:%lu: %s"), logical_filename,
- (unsigned long) XML_GetCurrentLineNumber (parser),
- (unsigned long) XML_GetCurrentColumnNumber (parser) + 1,
- XML_ErrorString (XML_GetErrorCode (parser)));
- }
-
- if (XML_Parse (parser, NULL, 0, 1) == 0)
- error (EXIT_FAILURE, 0, _("%s:%lu:%lu: %s"), logical_filename,
- (unsigned long) XML_GetCurrentLineNumber (parser),
- (unsigned long) XML_GetCurrentColumnNumber (parser) + 1,
- XML_ErrorString (XML_GetErrorCode (parser)));
-
- XML_ParserFree (parser);
-
- /* Close scanner. */
- logical_file_name = NULL;
- parser = NULL;
-}
-
-#endif
-
-void
-extract_appdata (FILE *fp,
- const char *real_filename, const char *logical_filename,
- flag_context_list_table_ty *flag_table,
- msgdomain_list_ty *mdlp)
-{
-#if DYNLOAD_LIBEXPAT || HAVE_LIBEXPAT
- if (LIBEXPAT_AVAILABLE ())
- do_extract_appdata (fp, real_filename, logical_filename, mdlp);
- else
-#endif
- {
- multiline_error (xstrdup (""),
- xasprintf (_("\
-Language \"appdata\" is not supported. %s relies on expat.\n\
-This version was built without expat.\n"),
- basename (program_name)));
- exit (EXIT_FAILURE);
- }
-}
projects / thirdparty / gettext.git / commitdiff
