/* Character set conversion with error handling.
- Copyright (C) 2001-2007 Free Software Foundation, Inc.
+ Copyright (C) 2001-2007, 2009-2014 Free Software Foundation, Inc.
Written by Bruno Haible and Simon Josefsson.
This program is free software: you can redistribute it and/or modify
#include <iconv.h>
#endif
+#include "iconveh.h"
+
#ifdef __cplusplus
extern "C" {
#endif
-/* Handling of unconvertible characters. */
-enum iconv_ilseq_handler
-{
- iconveh_error, /* return and set errno = EILSEQ */
- iconveh_question_mark, /* use one '?' per unconvertible character */
- iconveh_escape_sequence /* use escape sequence \uxxxx or \Uxxxxxxxx */
-};
-
#if HAVE_ICONV
+/* A conversion descriptor for use by the iconveh functions. */
+typedef struct
+ {
+ /* Conversion descriptor from FROM_CODESET to TO_CODESET, or (iconv_t)(-1)
+ if the system does not support a direct conversion from FROM_CODESET to
+ TO_CODESET. */
+ iconv_t cd;
+ /* Conversion descriptor from FROM_CODESET to UTF-8 (or (iconv_t)(-1) if
+ FROM_CODESET is UTF-8). */
+ iconv_t cd1;
+ /* Conversion descriptor from UTF-8 to TO_CODESET (or (iconv_t)(-1) if
+ TO_CODESET is UTF-8). */
+ iconv_t cd2;
+ }
+ iconveh_t;
+
+/* Open a conversion descriptor for use by the iconveh functions.
+ If successful, fills *CDP and returns 0. Upon failure, return -1 with errno
+ set. */
+extern int
+ iconveh_open (const char *to_codeset, const char *from_codeset,
+ iconveh_t *cdp);
+
+/* Close a conversion descriptor created by iconveh_open().
+ Return value: 0 if successful, otherwise -1 and errno set. */
+extern int
+ iconveh_close (const iconveh_t *cd);
+
/* Convert an entire string from one encoding to another, using iconv.
The original string is at [SRC,...,SRC+SRCLEN-1].
- CD is the conversion descriptor from FROMCODE to TOCODE, or (iconv_t)(-1) if
- the system does not support a direct conversion from FROMCODE to TOCODE.
- CD1 is the conversion descriptor from FROM_CODESET to UTF-8 (or
- (iconv_t)(-1) if FROM_CODESET is UTF-8).
- CD2 is the conversion descriptor from UTF-8 to TO_CODESET (or (iconv_t)(-1)
- if TO_CODESET is UTF-8).
+ CD points to the conversion descriptor from FROMCODE to TOCODE, created by
+ the function iconveh_open().
If OFFSETS is not NULL, it should point to an array of SRCLEN integers; this
array is filled with offsets into the result, i.e. the character starting
at SRC[i] corresponds to the character starting at (*RESULTP)[OFFSETS[i]],
unchanged if no dynamic memory allocation was necessary. */
extern int
mem_cd_iconveh (const char *src, size_t srclen,
- iconv_t cd, iconv_t cd1, iconv_t cd2,
- enum iconv_ilseq_handler handler,
- size_t *offsets,
- char **resultp, size_t *lengthp);
+ const iconveh_t *cd,
+ enum iconv_ilseq_handler handler,
+ size_t *offsets,
+ char **resultp, size_t *lengthp);
/* Convert an entire string from one encoding to another, using iconv.
The original string is the NUL-terminated string starting at SRC.
- CD is the conversion descriptor from FROMCODE to TOCODE, or (iconv_t)(-1) if
- the system does not support a direct conversion from FROMCODE to TOCODE.
+ CD points to the conversion descriptor from FROMCODE to TOCODE, created by
+ the function iconveh_open().
Both the "from" and the "to" encoding must use a single NUL byte at the end
of the string (i.e. not UCS-2, UCS-4, UTF-16, UTF-32).
- CD1 is the conversion descriptor from FROM_CODESET to UTF-8 (or
- (iconv_t)(-1) if FROM_CODESET is UTF-8).
- CD2 is the conversion descriptor from UTF-8 to TO_CODESET (or (iconv_t)(-1)
- if TO_CODESET is UTF-8).
Allocate a malloced memory block for the result.
Return value: the freshly allocated resulting NUL-terminated string if
successful, otherwise NULL and errno set. */
extern char *
str_cd_iconveh (const char *src,
- iconv_t cd, iconv_t cd1, iconv_t cd2,
- enum iconv_ilseq_handler handler);
+ const iconveh_t *cd,
+ enum iconv_ilseq_handler handler);
#endif
unchanged if no dynamic memory allocation was necessary. */
extern int
mem_iconveh (const char *src, size_t srclen,
- const char *from_codeset, const char *to_codeset,
- enum iconv_ilseq_handler handler,
- size_t *offsets,
- char **resultp, size_t *lengthp);
+ const char *from_codeset, const char *to_codeset,
+ enum iconv_ilseq_handler handler,
+ size_t *offsets,
+ char **resultp, size_t *lengthp);
/* Convert an entire string from one encoding to another, using iconv.
The original string is the NUL-terminated string starting at SRC.
successful, otherwise NULL and errno set. */
extern char *
str_iconveh (const char *src,
- const char *from_codeset, const char *to_codeset,
- enum iconv_ilseq_handler handler);
+ const char *from_codeset, const char *to_codeset,
+ enum iconv_ilseq_handler handler);
#ifdef __cplusplus
projects / gnulib.git / blobdiff