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357 lines
15 KiB
C
357 lines
15 KiB
C
/* Public API for GNU gettext PO files - contained in libgettextpo.
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Copyright (C) 2003-2008, 2010 Free Software Foundation, Inc.
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Written by Bruno Haible <bruno@clisp.org>, 2003.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef _GETTEXT_PO_H
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#define _GETTEXT_PO_H 1
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#include <stdlib.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* =========================== Meta Information ============================ */
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/* Version number: (major<<16) + (minor<<8) + subminor */
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#define LIBGETTEXTPO_VERSION 0x001201
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extern int libgettextpo_version;
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/* ================================= Types ================================= */
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/* A po_file_t represents the contents of a PO file. */
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typedef struct po_file *po_file_t;
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/* A po_message_iterator_t represents an iterator through a domain of a
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PO file. */
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typedef struct po_message_iterator *po_message_iterator_t;
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/* A po_message_t represents a message in a PO file. */
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typedef struct po_message *po_message_t;
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/* A po_filepos_t represents a string's position within a source file. */
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typedef struct po_filepos *po_filepos_t;
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/* A po_error_handler handles error situations. */
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struct po_error_handler
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{
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/* Signal an error. The error message is built from FORMAT and the following
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arguments. ERRNUM, if nonzero, is an errno value.
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Must increment the error_message_count variable declared in error.h.
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Must not return if STATUS is nonzero. */
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void (*error) (int status, int errnum,
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const char *format, ...)
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#if ((__GNUC__ == 3 && __GNUC_MINOR__ >= 1) || __GNUC__ > 3) && !__STRICT_ANSI__
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__attribute__ ((__format__ (__printf__, 3, 4)))
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#endif
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;
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/* Signal an error. The error message is built from FORMAT and the following
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arguments. The error location is at FILENAME line LINENO. ERRNUM, if
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nonzero, is an errno value.
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Must increment the error_message_count variable declared in error.h.
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Must not return if STATUS is nonzero. */
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void (*error_at_line) (int status, int errnum,
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const char *filename, unsigned int lineno,
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const char *format, ...)
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#if ((__GNUC__ == 3 && __GNUC_MINOR__ >= 1) || __GNUC__ > 3) && !__STRICT_ANSI__
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__attribute__ ((__format__ (__printf__, 5, 6)))
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#endif
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;
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/* Signal a multiline warning. The PREFIX applies to all lines of the
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MESSAGE. Free the PREFIX and MESSAGE when done. */
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void (*multiline_warning) (char *prefix, char *message);
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/* Signal a multiline error. The PREFIX applies to all lines of the
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MESSAGE. Free the PREFIX and MESSAGE when done.
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Must increment the error_message_count variable declared in error.h if
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PREFIX is non-NULL. */
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void (*multiline_error) (char *prefix, char *message);
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};
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typedef const struct po_error_handler *po_error_handler_t;
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/* A po_xerror_handler handles warnings, error and fatal error situations. */
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#define PO_SEVERITY_WARNING 0 /* just a warning, tell the user */
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#define PO_SEVERITY_ERROR 1 /* an error, the operation cannot complete */
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#define PO_SEVERITY_FATAL_ERROR 2 /* an error, the operation must be aborted */
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struct po_xerror_handler
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{
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/* Signal a problem of the given severity.
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MESSAGE and/or FILENAME + LINENO indicate where the problem occurred.
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If FILENAME is NULL, FILENAME and LINENO and COLUMN should be ignored.
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If LINENO is (size_t)(-1), LINENO and COLUMN should be ignored.
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If COLUMN is (size_t)(-1), it should be ignored.
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MESSAGE_TEXT is the problem description (if MULTILINE_P is true,
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multiple lines of text, each terminated with a newline, otherwise
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usually a single line).
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Must not return if SEVERITY is PO_SEVERITY_FATAL_ERROR. */
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void (*xerror) (int severity,
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po_message_t message,
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const char *filename, size_t lineno, size_t column,
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int multiline_p, const char *message_text);
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/* Signal a problem that refers to two messages.
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Similar to two calls to xerror.
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If possible, a "..." can be appended to MESSAGE_TEXT1 and prepended to
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MESSAGE_TEXT2. */
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void (*xerror2) (int severity,
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po_message_t message1,
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const char *filename1, size_t lineno1, size_t column1,
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int multiline_p1, const char *message_text1,
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po_message_t message2,
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const char *filename2, size_t lineno2, size_t column2,
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int multiline_p2, const char *message_text2);
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};
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typedef const struct po_xerror_handler *po_xerror_handler_t;
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/* Memory allocation:
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The memory allocations performed by these functions use xmalloc(),
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therefore will cause a program exit if memory is exhausted.
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The memory allocated by po_file_read, and implicitly returned through
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the po_message_* functions, lasts until freed with po_file_free. */
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/* ============================= po_file_t API ============================= */
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/* Create an empty PO file representation in memory. */
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extern po_file_t po_file_create (void);
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/* Read a PO file into memory.
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Return its contents. Upon failure, return NULL and set errno. */
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#define po_file_read po_file_read_v3
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extern po_file_t po_file_read (const char *filename,
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po_xerror_handler_t handler);
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/* Write an in-memory PO file to a file.
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Upon failure, return NULL and set errno. */
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#define po_file_write po_file_write_v2
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extern po_file_t po_file_write (po_file_t file, const char *filename,
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po_xerror_handler_t handler);
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/* Free a PO file from memory. */
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extern void po_file_free (po_file_t file);
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/* Return the names of the domains covered by a PO file in memory. */
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extern const char * const * po_file_domains (po_file_t file);
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/* =========================== Header entry API ============================ */
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/* Return the header entry of a domain of a PO file in memory.
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The domain NULL denotes the default domain.
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Return NULL if there is no header entry. */
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extern const char * po_file_domain_header (po_file_t file, const char *domain);
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/* Return the value of a field in a header entry.
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The return value is either a freshly allocated string, to be freed by the
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caller, or NULL. */
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extern char * po_header_field (const char *header, const char *field);
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/* Return the header entry with a given field set to a given value. The field
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is added if necessary.
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The return value is a freshly allocated string. */
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extern char * po_header_set_field (const char *header, const char *field, const char *value);
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/* ======================= po_message_iterator_t API ======================= */
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/* Create an iterator for traversing a domain of a PO file in memory.
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The domain NULL denotes the default domain. */
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extern po_message_iterator_t po_message_iterator (po_file_t file, const char *domain);
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/* Free an iterator. */
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extern void po_message_iterator_free (po_message_iterator_t iterator);
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/* Return the next message, and advance the iterator.
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Return NULL at the end of the message list. */
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extern po_message_t po_next_message (po_message_iterator_t iterator);
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/* Insert a message in a PO file in memory, in the domain and at the position
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indicated by the iterator. The iterator thereby advances past the freshly
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inserted message. */
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extern void po_message_insert (po_message_iterator_t iterator, po_message_t message);
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/* =========================== po_message_t API ============================ */
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/* Return a freshly constructed message.
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To finish initializing the message, you must set the msgid and msgstr. */
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extern po_message_t po_message_create (void);
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/* Return the context of a message, or NULL for a message not restricted to a
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context. */
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extern const char * po_message_msgctxt (po_message_t message);
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/* Change the context of a message. NULL means a message not restricted to a
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context. */
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extern void po_message_set_msgctxt (po_message_t message, const char *msgctxt);
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/* Return the msgid (untranslated English string) of a message. */
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extern const char * po_message_msgid (po_message_t message);
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/* Change the msgid (untranslated English string) of a message. */
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extern void po_message_set_msgid (po_message_t message, const char *msgid);
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/* Return the msgid_plural (untranslated English plural string) of a message,
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or NULL for a message without plural. */
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extern const char * po_message_msgid_plural (po_message_t message);
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/* Change the msgid_plural (untranslated English plural string) of a message.
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NULL means a message without plural. */
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extern void po_message_set_msgid_plural (po_message_t message, const char *msgid_plural);
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/* Return the msgstr (translation) of a message.
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Return the empty string for an untranslated message. */
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extern const char * po_message_msgstr (po_message_t message);
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/* Change the msgstr (translation) of a message.
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Use an empty string to denote an untranslated message. */
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extern void po_message_set_msgstr (po_message_t message, const char *msgstr);
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/* Return the msgstr[index] for a message with plural handling, or
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NULL when the index is out of range or for a message without plural. */
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extern const char * po_message_msgstr_plural (po_message_t message, int index);
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/* Change the msgstr[index] for a message with plural handling.
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Use a NULL value at the end to reduce the number of plural forms. */
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extern void po_message_set_msgstr_plural (po_message_t message, int index, const char *msgstr);
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/* Return the comments for a message. */
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extern const char * po_message_comments (po_message_t message);
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/* Change the comments for a message.
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comments should be a multiline string, ending in a newline, or empty. */
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extern void po_message_set_comments (po_message_t message, const char *comments);
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/* Return the extracted comments for a message. */
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extern const char * po_message_extracted_comments (po_message_t message);
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/* Change the extracted comments for a message.
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comments should be a multiline string, ending in a newline, or empty. */
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extern void po_message_set_extracted_comments (po_message_t message, const char *comments);
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/* Return the i-th file position for a message, or NULL if i is out of
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range. */
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extern po_filepos_t po_message_filepos (po_message_t message, int i);
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/* Remove the i-th file position from a message.
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The indices of all following file positions for the message are decremented
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by one. */
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extern void po_message_remove_filepos (po_message_t message, int i);
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/* Add a file position to a message, if it is not already present for the
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message.
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file is the file name.
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start_line is the line number where the string starts, or (size_t)(-1) if no
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line number is available. */
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extern void po_message_add_filepos (po_message_t message, const char *file, size_t start_line);
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/* Return the previous context of a message, or NULL for none. */
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extern const char * po_message_prev_msgctxt (po_message_t message);
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/* Change the previous context of a message. NULL is allowed. */
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extern void po_message_set_prev_msgctxt (po_message_t message, const char *prev_msgctxt);
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/* Return the previous msgid (untranslated English string) of a message, or
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NULL for none. */
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extern const char * po_message_prev_msgid (po_message_t message);
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/* Change the previous msgid (untranslated English string) of a message.
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NULL is allowed. */
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extern void po_message_set_prev_msgid (po_message_t message, const char *prev_msgid);
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/* Return the previous msgid_plural (untranslated English plural string) of a
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message, or NULL for none. */
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extern const char * po_message_prev_msgid_plural (po_message_t message);
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/* Change the previous msgid_plural (untranslated English plural string) of a
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message. NULL is allowed. */
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extern void po_message_set_prev_msgid_plural (po_message_t message, const char *prev_msgid_plural);
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/* Return true if the message is marked obsolete. */
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extern int po_message_is_obsolete (po_message_t message);
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/* Change the obsolete mark of a message. */
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extern void po_message_set_obsolete (po_message_t message, int obsolete);
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/* Return true if the message is marked fuzzy. */
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extern int po_message_is_fuzzy (po_message_t message);
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/* Change the fuzzy mark of a message. */
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extern void po_message_set_fuzzy (po_message_t message, int fuzzy);
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/* Return true if the message is marked as being a format string of the given
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type (e.g. "c-format"). */
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extern int po_message_is_format (po_message_t message, const char *format_type);
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/* Change the format string mark for a given type of a message. */
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extern void po_message_set_format (po_message_t message, const char *format_type, /*bool*/int value);
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/* If a numeric range of a message is set, return true and store the minimum
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and maximum value in *MINP and *MAXP. */
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extern int po_message_is_range (po_message_t message, int *minp, int *maxp);
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/* Change the numeric range of a message. MIN and MAX must be non-negative,
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with MIN < MAX. Use MIN = MAX = -1 to remove the numeric range of a
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message. */
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extern void po_message_set_range (po_message_t message, int min, int max);
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/* =========================== po_filepos_t API ============================ */
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/* Return the file name. */
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extern const char * po_filepos_file (po_filepos_t filepos);
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/* Return the line number where the string starts, or (size_t)(-1) if no line
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number is available. */
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extern size_t po_filepos_start_line (po_filepos_t filepos);
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/* ============================ Format type API ============================= */
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/* Return a NULL terminated array of the supported format types. */
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extern const char * const * po_format_list (void);
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/* Return the pretty name associated with a format type.
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For example, for "csharp-format", return "C#".
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Return NULL if the argument is not a supported format type. */
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extern const char * po_format_pretty_name (const char *format_type);
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/* ============================= Checking API ============================== */
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/* Test whether an entire file PO file is valid, like msgfmt does it.
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If it is invalid, pass the reasons to the handler. */
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extern void po_file_check_all (po_file_t file, po_xerror_handler_t handler);
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/* Test a single message, to be inserted in a PO file in memory, like msgfmt
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does it. If it is invalid, pass the reasons to the handler. The iterator
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is not modified by this call; it only specifies the file and the domain. */
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extern void po_message_check_all (po_message_t message, po_message_iterator_t iterator, po_xerror_handler_t handler);
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/* Test whether the message translation is a valid format string if the message
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is marked as being a format string. If it is invalid, pass the reasons to
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the handler. */
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#define po_message_check_format po_message_check_format_v2
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extern void po_message_check_format (po_message_t message, po_xerror_handler_t handler);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _GETTEXT_PO_H */
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