From f7548d6d28c313cf80e6f3ef89aed16a19815df1 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:51:24 +0200 Subject: Adding upstream version 1:2.3.19.1+dfsg1. Signed-off-by: Daniel Baumann --- src/lib-charset/charset-utf8.c | 99 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 src/lib-charset/charset-utf8.c (limited to 'src/lib-charset/charset-utf8.c') diff --git a/src/lib-charset/charset-utf8.c b/src/lib-charset/charset-utf8.c new file mode 100644 index 0000000..22038e5 --- /dev/null +++ b/src/lib-charset/charset-utf8.c @@ -0,0 +1,99 @@ +/* Copyright (c) 2002-2018 Dovecot authors, see the included COPYING file */ + +#include "lib.h" +#include "buffer.h" +#include "str.h" +#include "charset-utf8-private.h" + +#include + +#ifdef HAVE_ICONV +const struct charset_utf8_vfuncs *charset_utf8_vfuncs = &charset_iconv; +#else +const struct charset_utf8_vfuncs *charset_utf8_vfuncs = &charset_utf8only; +#endif + +bool charset_is_utf8(const char *charset) +{ + return strcasecmp(charset, "us-ascii") == 0 || + strcasecmp(charset, "ascii") == 0 || + strcasecmp(charset, "UTF-8") == 0 || + strcasecmp(charset, "UTF8") == 0; +} + +int charset_to_utf8_str(const char *charset, normalizer_func_t *normalizer, + const char *input, string_t *output, + enum charset_result *result_r) +{ + struct charset_translation *t; + size_t len = strlen(input); + + if (charset_to_utf8_begin(charset, normalizer, &t) < 0) + return -1; + + *result_r = charset_to_utf8(t, (const unsigned char *)input, + &len, output); + charset_to_utf8_end(&t); + return 0; +} + +struct charset_translation * +charset_utf8_to_utf8_begin(normalizer_func_t *normalizer) +{ + struct charset_translation *trans; + + if (charset_to_utf8_begin("UTF-8", normalizer, &trans) < 0) + i_unreached(); + return trans; +} + +enum charset_result +charset_utf8_to_utf8(normalizer_func_t *normalizer, + const unsigned char *src, size_t *src_size, buffer_t *dest) +{ + enum charset_result res = CHARSET_RET_OK; + size_t pos; + + uni_utf8_partial_strlen_n(src, *src_size, &pos); + if (pos < *src_size) { + i_assert(*src_size - pos <= CHARSET_MAX_PENDING_BUF_SIZE); + *src_size = pos; + res = CHARSET_RET_INCOMPLETE_INPUT; + } + + if (normalizer != NULL) { + if (normalizer(src, *src_size, dest) < 0) + return CHARSET_RET_INVALID_INPUT; + } else if (!uni_utf8_get_valid_data(src, *src_size, dest)) { + return CHARSET_RET_INVALID_INPUT; + } else { + buffer_append(dest, src, *src_size); + } + return res; +} + +int charset_to_utf8_begin(const char *charset, normalizer_func_t *normalizer, + struct charset_translation **t_r) +{ + return charset_utf8_vfuncs->to_utf8_begin(charset, normalizer, t_r); +} + +void charset_to_utf8_end(struct charset_translation **_t) +{ + struct charset_translation *t = *_t; + + *_t = NULL; + charset_utf8_vfuncs->to_utf8_end(t); +} + +void charset_to_utf8_reset(struct charset_translation *t) +{ + charset_utf8_vfuncs->to_utf8_reset(t); +} + +enum charset_result +charset_to_utf8(struct charset_translation *t, + const unsigned char *src, size_t *src_size, buffer_t *dest) +{ + return charset_utf8_vfuncs->to_utf8(t, src, src_size, dest); +} -- cgit v1.2.3