/*
* Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
- * Copyright (C) 1999-2002 Hiroyuki Yamamoto
+ * Copyright (C) 1999-2003 Hiroyuki Yamamoto
*
* 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
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
-
-#if (HAVE_WCTYPE_H && HAVE_WCHAR_H)
-# include <wchar.h>
-# include <wctype.h>
-#endif
+#include <errno.h>
#if HAVE_LOCALE_H
# include <locale.h>
#endif
-#if HAVE_LIBJCONV
-# include <jconv.h>
+#if HAVE_ICONV
+# include <iconv.h>
#endif
#include "intl.h"
#include "codeconv.h"
#include "unmime.h"
-#include "common/base64.h"
+#include "base64.h"
+#include "quoted-printable.h"
#include "utils.h"
#include "prefs_common.h"
CodeConverter *conv;
conv = g_new0(CodeConverter, 1);
-#if !HAVE_LIBJCONV
- conv->code_conv_func = conv_get_code_conv_func(charset);
-#endif
+ conv->code_conv_func = conv_get_code_conv_func(charset, NULL);
conv->charset_str = g_strdup(charset);
conv->charset = conv_get_charset_from_str(charset);
gint conv_convert(CodeConverter *conv, gchar *outbuf, gint outlen,
const gchar *inbuf)
{
-#if HAVE_LIBJCONV
- gchar *str;
-
- str = conv_codeset_strdup(inbuf, conv->charset_str, NULL);
- if (!str)
- return -1;
+#if HAVE_ICONV
+ if (conv->code_conv_func != conv_noconv)
+ conv->code_conv_func(outbuf, outlen, inbuf);
else {
- strncpy2(outbuf, str, outlen);
- g_free(str);
+ gchar *str;
+
+ str = conv_codeset_strdup(inbuf, conv->charset_str, NULL);
+ if (!str)
+ return -1;
+ else {
+ strncpy2(outbuf, str, outlen);
+ g_free(str);
+ }
}
-#else /* !HAVE_LIBJCONV */
+#else /* !HAVE_ICONV */
conv->code_conv_func(outbuf, outlen, inbuf);
#endif
}
gchar *conv_codeset_strdup(const gchar *inbuf,
- const gchar *src_codeset, const gchar *dest_codeset)
+ const gchar *src_code, const gchar *dest_code)
{
gchar *buf;
size_t len;
-#if HAVE_LIBJCONV
- gint actual_codeset;
- const gchar *const *codesets;
- gint n_codesets;
-#else /* !HAVE_LIBJCONV */
- CharSet src_charset = C_AUTO, dest_charset = C_AUTO;
-#endif
+ CodeConvFunc conv_func;
- if (!dest_codeset) {
- CodeConvFunc func;
+ conv_func = conv_get_code_conv_func(src_code, dest_code);
+ if (conv_func != conv_noconv) {
+ len = (strlen(inbuf) + 1) * 3;
+ buf = g_malloc(len);
+ if (!buf) return NULL;
- func = conv_get_code_conv_func(src_codeset);
- if (func != conv_noconv) {
- if (func == conv_jistodisp ||
- func == conv_sjistodisp ||
- func == conv_anytodisp)
- len = strlen(inbuf) * 2 + 1;
- else
- len = strlen(inbuf) + 1;
- buf = g_malloc(len);
- if (!buf) return NULL;
- func(buf, len, inbuf);
- buf = g_realloc(buf, strlen(buf) + 1);
- return buf;
- }
+ conv_func(buf, len, inbuf);
+ return g_realloc(buf, strlen(buf) + 1);
}
- /* don't convert if src and dest codeset are identical */
- if (src_codeset && dest_codeset &&
- !strcasecmp(src_codeset, dest_codeset))
- return g_strdup(inbuf);
-
-#if HAVE_LIBJCONV
- if (src_codeset) {
- codesets = &src_codeset;
- n_codesets = 1;
- } else
- codesets = jconv_info_get_pref_codesets(&n_codesets);
- if (!dest_codeset) {
- dest_codeset = conv_get_current_charset_str();
- /* don't convert if current codeset is US-ASCII */
- if (!strcasecmp(dest_codeset, CS_US_ASCII))
- return g_strdup(inbuf);
- }
+#if HAVE_ICONV
+ if (!src_code)
+ src_code = conv_get_outgoing_charset_str();
+ if (!dest_code)
+ dest_code = conv_get_current_charset_str();
- if (jconv_alloc_conv(inbuf, strlen(inbuf), &buf, &len,
- codesets, n_codesets,
- &actual_codeset, dest_codeset)
- == 0)
- return buf;
- else {
-#if 0
- g_warning("code conversion from %s to %s failed\n",
- codesets && codesets[0] ? codesets[0] : "(unknown)",
- dest_codeset);
-#endif /* 0 */
- return NULL;
- }
-#else /* !HAVE_LIBJCONV */
- if (src_codeset) {
- if (!strcasecmp(src_codeset, CS_EUC_JP) ||
- !strcasecmp(src_codeset, CS_EUCJP))
- src_charset = C_EUC_JP;
- else if (!strcasecmp(src_codeset, CS_SHIFT_JIS) ||
- !strcasecmp(src_codeset, "SHIFT-JIS") ||
- !strcasecmp(src_codeset, "SJIS"))
- src_charset = C_SHIFT_JIS;
- if (dest_codeset && !strcasecmp(dest_codeset, CS_ISO_2022_JP))
- dest_charset = C_ISO_2022_JP;
- }
+ /* don't convert if current codeset is US-ASCII */
+ if (!strcasecmp(dest_code, CS_US_ASCII))
+ return g_strdup(inbuf);
- if ((src_charset == C_EUC_JP || src_charset == C_SHIFT_JIS) &&
- dest_charset == C_ISO_2022_JP) {
- len = (strlen(inbuf) + 1) * 3;
- buf = g_malloc(len);
- if (buf) {
- if (src_charset == C_EUC_JP)
- conv_euctojis(buf, len, inbuf);
- else
- conv_anytojis(buf, len, inbuf);
- buf = g_realloc(buf, strlen(buf) + 1);
- }
- } else
- buf = g_strdup(inbuf);
+ /* don't convert if src and dest codeset are identical */
+ if (!strcasecmp(src_code, dest_code))
+ return g_strdup(inbuf);
- return buf;
-#endif /* !HAVE_LIBJCONV */
+ return conv_iconv_strdup(inbuf, src_code, dest_code);
+#else
+ return g_strdup(inbuf);
+#endif /* HAVE_ICONV */
}
-CodeConvFunc conv_get_code_conv_func(const gchar *charset)
+CodeConvFunc conv_get_code_conv_func(const gchar *src_charset_str,
+ const gchar *dest_charset_str)
{
- CodeConvFunc code_conv;
- CharSet cur_charset;
+ CodeConvFunc code_conv = conv_noconv;
+ CharSet src_charset;
+ CharSet dest_charset;
- if (!charset) {
- cur_charset = conv_get_current_charset();
- if (cur_charset == C_EUC_JP || cur_charset == C_SHIFT_JIS)
+ if (!src_charset_str)
+ src_charset = conv_get_current_charset();
+ else
+ src_charset = conv_get_charset_from_str(src_charset_str);
+
+ /* auto detection mode */
+ if (!src_charset_str && !dest_charset_str) {
+ if (src_charset == C_EUC_JP || src_charset == C_SHIFT_JIS)
return conv_anytodisp;
else
return conv_noconv;
}
- if (!strcasecmp(charset, CS_ISO_2022_JP) ||
- !strcasecmp(charset, CS_ISO_2022_JP_2))
- code_conv = conv_jistodisp;
- else if (!strcasecmp(charset, CS_US_ASCII))
- code_conv = conv_ustodisp;
- else if (!strncasecmp(charset, CS_ISO_8859_1, 10))
- code_conv = conv_latintodisp;
-#if !HAVE_LIBJCONV
- else if (!strncasecmp(charset, "ISO-8859-", 9))
- code_conv = conv_latintodisp;
+ dest_charset = conv_get_charset_from_str(dest_charset_str);
+
+ switch (src_charset) {
+ case C_ISO_2022_JP:
+ case C_ISO_2022_JP_2:
+ if (dest_charset == C_AUTO)
+ code_conv = conv_jistodisp;
+ else if (dest_charset == C_EUC_JP)
+ code_conv = conv_jistoeuc;
+ break;
+ case C_US_ASCII:
+ if (dest_charset == C_AUTO)
+ code_conv = conv_ustodisp;
+ break;
+ case C_ISO_8859_1:
+#if !HAVE_ICONV
+ case C_ISO_8859_2:
+ case C_ISO_8859_4:
+ case C_ISO_8859_5:
+ case C_ISO_8859_7:
+ case C_ISO_8859_8:
+ case C_ISO_8859_9:
+ case C_ISO_8859_11:
+ case C_ISO_8859_13:
+ case C_ISO_8859_15:
#endif
- else if (!strcasecmp(charset, CS_SHIFT_JIS) ||
- !strcasecmp(charset, "SHIFT-JIS") ||
- !strcasecmp(charset, "SJIS") ||
- !strcasecmp(charset, "X-SJIS"))
- code_conv = conv_sjistodisp;
- else if (!strcasecmp(charset, CS_EUC_JP) ||
- !strcasecmp(charset, CS_EUCJP))
- code_conv = conv_euctodisp;
- else
- code_conv = conv_noconv;
+ if (dest_charset == C_AUTO)
+ code_conv = conv_latintodisp;
+ break;
+ case C_SHIFT_JIS:
+ if (dest_charset == C_AUTO)
+ code_conv = conv_sjistodisp;
+ else if (dest_charset == C_EUC_JP)
+ code_conv = conv_sjistoeuc;
+ break;
+ case C_EUC_JP:
+ if (dest_charset == C_AUTO)
+ code_conv = conv_euctodisp;
+ else if (dest_charset == C_ISO_2022_JP ||
+ dest_charset == C_ISO_2022_JP_2)
+ code_conv = conv_euctojis;
+ break;
+ default:
+ break;
+ }
return code_conv;
}
+#if HAVE_ICONV
+gchar *conv_iconv_strdup(const gchar *inbuf,
+ const gchar *src_code, const gchar *dest_code)
+{
+ iconv_t cd;
+ const gchar *inbuf_p;
+ gchar *outbuf;
+ gchar *outbuf_p;
+ gint in_size;
+ gint in_left;
+ gint out_size;
+ gint out_left;
+ gint n_conv;
+
+ cd = iconv_open(dest_code, src_code);
+ if (cd == (iconv_t)-1)
+ return NULL;
+
+ inbuf_p = inbuf;
+ in_size = strlen(inbuf) + 1;
+ in_left = in_size;
+ out_size = in_size * 2;
+ outbuf = g_malloc(out_size);
+ outbuf_p = outbuf;
+ out_left = out_size;
+
+ while ((n_conv = iconv(cd, (gchar **)&inbuf_p, &in_left,
+ &outbuf_p, &out_left)) < 0) {
+ if (EILSEQ == errno) {
+ *outbuf_p = '\0';
+ break;
+ } else if (EINVAL == errno) {
+ *outbuf_p = '\0';
+ break;
+ } else if (E2BIG == errno) {
+ out_size *= 2;
+ outbuf = g_realloc(outbuf, out_size);
+ inbuf_p = inbuf;
+ in_left = in_size;
+ outbuf_p = outbuf;
+ out_left = out_size;
+ } else {
+ g_warning("conv_iconv_strdup(): %s\n",
+ g_strerror(errno));
+ *outbuf_p = '\0';
+ break;
+ }
+ }
+
+ iconv_close(cd);
+
+ return outbuf;
+}
+#endif /* HAVE_ICONV */
+
static const struct {
CharSet charset;
gchar *const name;
{C_EUC_JP, CS_EUC_JP},
{C_EUC_JP, CS_EUCJP},
{C_SHIFT_JIS, CS_SHIFT_JIS},
+ {C_SHIFT_JIS, CS_SHIFT__JIS},
+ {C_SHIFT_JIS, CS_SJIS},
{C_ISO_2022_KR, CS_ISO_2022_KR},
{C_EUC_KR, CS_EUC_KR},
{C_ISO_2022_CN, CS_ISO_2022_CN},
{C_WINDOWS_874, CS_WINDOWS_874},
};
-#if !HAVE_LIBJCONV
static const struct {
gchar *const locale;
CharSet charset;
{"POSIX" , C_US_ASCII , C_US_ASCII},
{"ANSI_X3.4-1968" , C_US_ASCII , C_US_ASCII},
};
-#endif /* !HAVE_LIBJCONV */
const gchar *conv_get_charset_str(CharSet charset)
{
CharSet conv_get_current_charset(void)
{
static CharSet cur_charset = -1;
- gint i;
-
-#if HAVE_LIBJCONV
- const gchar *cur_codeset;
-#else
const gchar *cur_locale;
-#endif
+ gint i;
if (cur_charset != -1)
return cur_charset;
-#if HAVE_LIBJCONV
- cur_codeset = jconv_info_get_current_codeset();
- for (i = 0; i < sizeof(charsets) / sizeof(charsets[0]); i++) {
- if (!strcasecmp(cur_codeset, charsets[i].name)) {
- cur_charset = charsets[i].charset;
- return cur_charset;
- }
- }
-#else
cur_locale = conv_get_current_locale();
if (!cur_locale) {
cur_charset = C_US_ASCII;
for (i = 0; i < sizeof(locale_table) / sizeof(locale_table[0]); i++) {
const gchar *p;
- /* "ja_JP.EUC" matches with "ja_JP.eucJP" and "ja_JP.EUC" */
- /* "ja_JP" matches with "ja_JP.xxxx" and "ja" */
+ /* "ja_JP.EUC" matches with "ja_JP.eucJP", "ja_JP.EUC" and
+ "ja_JP". "ja_JP" matches with "ja_JP.xxxx" and "ja" */
if (!strncasecmp(cur_locale, locale_table[i].locale,
strlen(locale_table[i].locale))) {
cur_charset = locale_table[i].charset;
}
}
}
-#endif
cur_charset = C_AUTO;
return cur_charset;
CharSet conv_get_outgoing_charset(void)
{
static CharSet out_charset = -1;
- gint i;
-
-#if HAVE_LIBJCONV
- gint j, n_pref_codesets;
- const gchar *const *pref_codesets;
-#else
const gchar *cur_locale;
-#endif
+ gint i;
if (out_charset != -1)
return out_charset;
-#if HAVE_LIBJCONV
- /* skip US-ASCII and UTF-8 */
- pref_codesets = jconv_info_get_pref_codesets(&n_pref_codesets);
- for (i = 0; i < n_pref_codesets; i++) {
- for (j = 3; j < sizeof(charsets) / sizeof(charsets[0]); j++) {
- if (!strcasecmp(pref_codesets[i], charsets[j].name)) {
- out_charset = charsets[j].charset;
- return out_charset;
- }
- }
- }
-
- for (i = 0; i < n_pref_codesets; i++) {
- if (!strcasecmp(pref_codesets[i], "UTF-8")) {
- out_charset = C_UTF_8;
- return out_charset;
- }
- }
-
- out_charset = C_AUTO;
-#else
cur_locale = conv_get_current_locale();
if (!cur_locale) {
out_charset = C_AUTO;
}
}
- /* encoding conversion without libjconv is only supported
+#if !HAVE_ICONV
+ /* encoding conversion without iconv() is only supported
on Japanese locale for now */
if (out_charset == C_ISO_2022_JP)
return out_charset;
-
- out_charset = conv_get_current_charset();
+ else
+ return conv_get_current_charset();
#endif
return out_charset;
unmime_header(outbuf, str);
}
-#define MAX_ENCLEN 75
#define MAX_LINELEN 76
+#define MIMESEP_BEGIN "=?"
+#define MIMESEP_END "?="
#define B64LEN(len) ((len) / 3 * 4 + ((len) % 3 ? 4 : 0))
-#if HAVE_LIBJCONV
+#define LBREAK_IF_REQUIRED(cond) \
+{ \
+ if (len - (destp - dest) < MAX_LINELEN + 2) { \
+ *destp = '\0'; \
+ return; \
+ } \
+ \
+ if ((cond) && *srcp) { \
+ if (destp > dest && isspace(*(destp - 1))) \
+ destp--; \
+ else if (isspace(*srcp)) \
+ srcp++; \
+ if (*srcp) { \
+ *destp++ = '\n'; \
+ *destp++ = ' '; \
+ left = MAX_LINELEN - 1; \
+ } \
+ } \
+}
+
void conv_encode_header(gchar *dest, gint len, const gchar *src,
gint header_len)
{
- wchar_t *wsrc;
- wchar_t *wsrcp;
- gchar *destp;
- size_t line_len, mimehdr_len, mimehdr_begin_len;
- gchar *mimehdr_init = "=?";
- gchar *mimehdr_end = "?=";
- gchar *mimehdr_enctype = "?B?";
- const gchar *mimehdr_charset;
-
- /* g_print("src = %s\n", src); */
- mimehdr_charset = conv_get_outgoing_charset_str();
-
- /* convert to wide-character string */
- wsrcp = wsrc = strdup_mbstowcs(src);
- if (!wsrc) {
- g_warning("Can't convert string to wide characters.\n");
- strncpy2(dest, src, len);
- return;
+ const gchar *cur_encoding;
+ const gchar *out_encoding;
+ gint mimestr_len;
+ gchar *mimesep_enc;
+ gint left;
+ const gchar *srcp = src;
+ gchar *destp = dest;
+ gboolean use_base64;
+
+ if (MB_CUR_MAX > 1) {
+ use_base64 = TRUE;
+ mimesep_enc = "?B?";
+ } else {
+ use_base64 = FALSE;
+ mimesep_enc = "?Q?";
}
- mimehdr_len = strlen(mimehdr_init) + strlen(mimehdr_end) +
- strlen(mimehdr_charset) + strlen(mimehdr_enctype);
- mimehdr_begin_len = strlen(mimehdr_init) +
- strlen(mimehdr_charset) + strlen(mimehdr_enctype);
- line_len = header_len;
- destp = dest;
- *dest = '\0';
-
- while (*wsrcp) {
- wchar_t *wp, *wtmp, *wtmpp;
- gint nspc = 0;
- gboolean str_is_non_ascii;
-
- /* irresponsible buffer overrun check */
- if ((len - (destp - dest)) < (MAX_LINELEN + 1) * 2) break;
-
- /* encode string including space
- if non-ASCII string follows */
- if (is_next_nonascii(wsrcp)) {
- wp = wsrcp;
- while ((wp = find_wspace(wp)) != NULL)
- if (!is_next_nonascii(wp)) break;
- str_is_non_ascii = TRUE;
- } else {
- wp = find_wspace(wsrcp);
- str_is_non_ascii = FALSE;
- }
-
- if (wp != NULL) {
- wtmp = wcsndup(wsrcp, wp - wsrcp);
- wsrcp = wp + 1;
- while (iswspace(wsrcp[nspc])) nspc++;
- } else {
- wtmp = wcsdup(wsrcp);
- wsrcp += wcslen(wsrcp);
- }
-
- wtmpp = wtmp;
-
- do {
- gint tlen = 0;
- gchar *tmp; /* internal codeset */
- gchar *raw; /* converted, but not base64 encoded */
- register gchar *tmpp;
- gint raw_len;
-
- tmpp = tmp = g_malloc(wcslen(wtmpp) * MB_CUR_MAX + 1);
- *tmp = '\0';
- raw = g_strdup("");
- raw_len = 0;
-
- while (*wtmpp != (wchar_t)0) {
- gint mbl;
- gint dummy;
- gchar *raw_new = NULL;
- int raw_new_len = 0;
- const gchar *src_codeset;
-
- mbl = wctomb(tmpp, *wtmpp);
- if (mbl == -1) {
- g_warning("invalid wide character\n");
- wtmpp++;
- continue;
- }
- /* g_free(raw); */
- src_codeset = conv_get_current_charset_str();
- /* printf ("tmp = %s, tlen = %d, mbl\n",
- tmp, tlen, mbl); */
- if (jconv_alloc_conv(tmp, tlen + mbl,
- &raw_new, &raw_new_len,
- &src_codeset, 1,
- &dummy, mimehdr_charset)
- != 0) {
- g_warning("can't convert\n");
- tmpp[0] = '\0';
- wtmpp++;
- continue;
- }
- if (str_is_non_ascii) {
- gint dlen = mimehdr_len +
- B64LEN(raw_len);
- if ((line_len + dlen +
- (*(wtmpp + 1) ? 0 : nspc) +
- (line_len > 1 ? 1 : 0))
- > MAX_LINELEN) {
- g_free(raw_new);
- if (tlen == 0) {
- *destp++ = '\n';
- *destp++ = ' ';
- line_len = 1;
- continue;
- } else {
- *tmpp = '\0';
- break;
- }
- }
- } else if ((line_len + tlen + mbl +
- (*(wtmpp + 1) ? 0 : nspc) +
- (line_len > 1 ? 1 : 0))
- > MAX_LINELEN) {
- g_free(raw_new);
- if (1 + tlen + mbl +
- (*(wtmpp + 1) ? 0 : nspc)
- >= MAX_LINELEN) {
- *tmpp = '\0';
- break;
- }
- *destp++ = '\n';
- *destp++ = ' ';
- line_len = 1;
- continue;
- }
-
- tmpp += mbl;
- *tmpp = '\0';
+ cur_encoding = conv_get_current_charset_str();
+ if (!strcmp(cur_encoding, "US-ASCII"))
+ cur_encoding = "ISO-8859-1";
+ out_encoding = conv_get_outgoing_charset_str();
+ if (!strcmp(out_encoding, "US-ASCII"))
+ out_encoding = "ISO-8859-1";
- tlen += mbl;
+ mimestr_len = strlen(MIMESEP_BEGIN) + strlen(out_encoding) +
+ strlen(mimesep_enc) + strlen(MIMESEP_END);
- g_free(raw);
- raw = raw_new;
- raw_len = raw_new_len;
+ left = MAX_LINELEN - header_len;
- wtmpp++;
- }
- /* g_print("tmp = %s, tlen = %d, mb_seqlen = %d\n",
- tmp, tlen, mb_seqlen); */
-
- if (tlen == 0 || raw_len == 0) {
- g_free(tmp);
- g_free(raw);
- continue;
- }
-
- if (line_len > 1 && destp > dest) {
- *destp++ = ' ';
- *destp = '\0';
- line_len++;
- }
+ while (*srcp) {
+ LBREAK_IF_REQUIRED(left <= 0);
- if (str_is_non_ascii) {
- g_snprintf(destp, len - strlen(dest), "%s%s%s",
- mimehdr_init, mimehdr_charset,
- mimehdr_enctype);
- destp += mimehdr_begin_len;
- line_len += mimehdr_begin_len;
-
- base64_encode(destp, raw, raw_len);
- line_len += strlen(destp);
- destp += strlen(destp);
-
- strcpy(destp, mimehdr_end);
- destp += strlen(mimehdr_end);
- line_len += strlen(mimehdr_end);
- } else {
- strcpy(destp, tmp);
- line_len += strlen(destp);
- destp += strlen(destp);
- }
-
- g_free(tmp);
- g_free(raw);
- /* g_print("line_len = %d\n\n", line_len); */
- } while (*wtmpp != (wchar_t)0);
-
- while (iswspace(*wsrcp)) {
- gint mbl;
-
- mbl = wctomb(destp, *wsrcp++);
- if (mbl != -1) {
- destp += mbl;
- line_len += mbl;
- }
+ while (isspace(*srcp)) {
+ *destp++ = *srcp++;
+ left--;
+ LBREAK_IF_REQUIRED(left <= 0);
}
- *destp = '\0';
-
- g_free(wtmp);
- }
-
- g_free(wsrc);
-
- /* g_print("dest = %s\n", dest); */
-}
-#else /* !HAVE_LIBJCONV */
-
-#define JIS_SEQLEN 3
-
-void conv_encode_header(gchar *dest, gint len, const gchar *src,
- gint header_len)
-{
- wchar_t *wsrc;
- wchar_t *wsrcp;
- gchar *destp;
- size_t line_len, mimehdr_len, mimehdr_begin_len;
- gchar *mimehdr_init = "=?";
- gchar *mimehdr_end = "?=";
- gchar *mimehdr_enctype = "?B?";
- const gchar *mimehdr_charset;
- gboolean do_conv = FALSE;
-
- /* g_print("src = %s\n", src); */
- mimehdr_charset = conv_get_outgoing_charset_str();
- if (strcmp(mimehdr_charset, "ISO-2022-JP") == 0)
- do_conv = TRUE;
- else if (strcmp(mimehdr_charset, "US-ASCII") == 0)
- mimehdr_charset = "ISO-8859-1";
-
- /* convert to wide-character string */
- wsrcp = wsrc = strdup_mbstowcs(src);
- if (!wsrc) {
- g_warning("Can't convert string to wide characters.\n");
- strncpy2(dest, src, len);
- return;
- }
- mimehdr_len = strlen(mimehdr_init) + strlen(mimehdr_end) +
- strlen(mimehdr_charset) + strlen(mimehdr_enctype);
- mimehdr_begin_len = strlen(mimehdr_init) +
- strlen(mimehdr_charset) + strlen(mimehdr_enctype);
- line_len = header_len;
- destp = dest;
- *dest = '\0';
-
- while (*wsrcp) {
- wchar_t *wp, *wtmp, *wtmpp;
- gint nspc = 0;
- gboolean str_is_non_ascii;
-
- /* irresponsible buffer overrun check */
- if ((len - (destp - dest)) < (MAX_LINELEN + 1) * 2) break;
-
- /* encode string including space
- if non-ASCII string follows */
- if (is_next_nonascii(wsrcp)) {
- wp = wsrcp;
- while ((wp = find_wspace(wp)) != NULL)
- if (!is_next_nonascii(wp)) break;
- str_is_non_ascii = TRUE;
- } else {
- wp = find_wspace(wsrcp);
- str_is_non_ascii = FALSE;
- }
+ /* output as it is if the next word is ASCII string */
+ if (!is_next_nonascii(srcp)) {
+ gint word_len;
+
+ word_len = get_next_word_len(srcp);
+ LBREAK_IF_REQUIRED(left < word_len);
+ while (word_len > 0) {
+ LBREAK_IF_REQUIRED(left <= 0);
+ *destp++ = *srcp++;
+ left--;
+ word_len--;
+ }
- if (wp != NULL) {
- wtmp = wcsndup(wsrcp, wp - wsrcp);
- wsrcp = wp + 1;
- while (iswspace(wsrcp[nspc])) nspc++;
- } else {
- wtmp = wcsdup(wsrcp);
- wsrcp += wcslen(wsrcp);
+ continue;
}
- wtmpp = wtmp;
-
- do {
- gint prev_mbl = 1, tlen = 0, mb_seqlen = 0;
- gchar *tmp;
- register gchar *tmpp;
+ while (1) {
+ gint mb_len = 0;
+ gint cur_len = 0;
+ gchar *part_str;
+ gchar *out_str;
+ gchar *enc_str;
+ const gchar *p = srcp;
+ gint out_str_len;
+ gint out_enc_str_len;
+ gint mime_block_len;
+ gboolean cont = FALSE;
+
+ while (*p != '\0') {
+ if (isspace(*p) && !is_next_nonascii(p + 1))
+ break;
+
+ if (MB_CUR_MAX > 1) {
+ mb_len = mblen(p, MB_CUR_MAX);
+ if (mb_len < 0) {
+ g_warning("conv_encode_header(): invalid multibyte character encountered\n");
+ mb_len = 1;
+ }
+ } else
+ mb_len = 1;
+
+ Xstrndup_a(part_str, srcp, cur_len + mb_len, );
+ out_str = conv_codeset_strdup
+ (part_str, cur_encoding, out_encoding);
+ if (!out_str) {
+ g_warning("conv_encode_header(): code conversion failed\n");
+ out_str = g_strdup(out_str);
+ }
+ out_str_len = strlen(out_str);
- tmpp = tmp = g_malloc(wcslen(wtmpp) * MB_CUR_MAX + 1);
- *tmp = '\0';
+ if (use_base64)
+ out_enc_str_len = B64LEN(out_str_len);
+ else
+ out_enc_str_len =
+ qp_get_q_encoding_len(out_str);
- while (*wtmpp != (wchar_t)0) {
- gint mbl;
+ g_free(out_str);
- mbl = wctomb(tmpp, *wtmpp);
- if (mbl == -1) {
- g_warning("invalid wide character\n");
- wtmpp++;
+ if (mimestr_len + out_enc_str_len <= left) {
+ cur_len += mb_len;
+ p += mb_len;
+ } else if (cur_len == 0) {
+ LBREAK_IF_REQUIRED(1);
continue;
+ } else {
+ cont = TRUE;
+ break;
}
+ }
- /* length of KI + KO */
- if (do_conv && prev_mbl == 1 && mbl == 2)
- mb_seqlen += JIS_SEQLEN * 2;
-
- if (str_is_non_ascii) {
- gint dlen = mimehdr_len +
- B64LEN(tlen + mb_seqlen + mbl);
-
- if ((line_len + dlen +
- (*(wtmpp + 1) ? 0 : nspc) +
- (line_len > 1 ? 1 : 0))
- > MAX_LINELEN) {
- if (tlen == 0) {
- *destp++ = '\n';
- *destp++ = ' ';
- line_len = 1;
- mb_seqlen = 0;
- continue;
- } else {
- *tmpp = '\0';
- break;
- }
- }
- } else if ((line_len + tlen + mbl +
- (*(wtmpp + 1) ? 0 : nspc) +
- (line_len > 1 ? 1 : 0))
- > MAX_LINELEN) {
- if (1 + tlen + mbl +
- (*(wtmpp + 1) ? 0 : nspc)
- >= MAX_LINELEN) {
- *tmpp = '\0';
- break;
- }
- *destp++ = '\n';
- *destp++ = ' ';
- line_len = 1;
- continue;
+ if (cur_len > 0) {
+ Xstrndup_a(part_str, srcp, cur_len, );
+ out_str = conv_codeset_strdup
+ (part_str, cur_encoding, out_encoding);
+ if (!out_str) {
+ g_warning("conv_encode_header(): code conversion failed\n");
+ out_str = g_strdup(out_str);
}
+ out_str_len = strlen(out_str);
- tmpp += mbl;
- *tmpp = '\0';
+ if (use_base64)
+ out_enc_str_len = B64LEN(out_str_len);
+ else
+ out_enc_str_len =
+ qp_get_q_encoding_len(out_str);
- tlen += mbl;
- prev_mbl = mbl;
+ Xalloca(enc_str, out_enc_str_len + 1, );
+ if (use_base64)
+ base64_encode(enc_str, out_str, out_str_len);
+ else
+ qp_q_encode(enc_str, out_str);
- wtmpp++;
- }
- /* g_print("tmp = %s, tlen = %d, mb_seqlen = %d\n",
- tmp, tlen, mb_seqlen); */
+ g_free(out_str);
- if (tlen == 0) {
- g_free(tmp);
- continue;
- }
+ /* output MIME-encoded string block */
+ mime_block_len = mimestr_len + strlen(enc_str);
+ g_snprintf(destp, mime_block_len + 1,
+ MIMESEP_BEGIN "%s%s%s" MIMESEP_END,
+ out_encoding, mimesep_enc, enc_str);
+ destp += mime_block_len;
+ srcp += cur_len;
- if (line_len > 1 && destp > dest) {
- *destp++ = ' ';
- *destp = '\0';
- line_len++;
+ left -= mime_block_len;
}
- if (str_is_non_ascii) {
- gchar *raw;
+ LBREAK_IF_REQUIRED(cont);
- raw = g_new(gchar, tlen + mb_seqlen + 1);
- if (do_conv)
- conv_euctojis(raw, tlen + mb_seqlen + 1,
- tmp);
- else
- strcpy(raw, tmp);
- g_snprintf(destp, len - strlen(dest), "%s%s%s",
- mimehdr_init, mimehdr_charset,
- mimehdr_enctype);
- destp += mimehdr_begin_len;
- line_len += mimehdr_begin_len;
-
- base64_encode(destp, raw, strlen(raw));
- line_len += strlen(destp);
- destp += strlen(destp);
-
- strcpy(destp, mimehdr_end);
- destp += strlen(mimehdr_end);
- line_len += strlen(mimehdr_end);
-
- g_free(raw);
- } else {
- strcpy(destp, tmp);
- line_len += strlen(destp);
- destp += strlen(destp);
- }
-
- g_free(tmp);
- /* g_print("line_len = %d\n\n", line_len); */
- } while (*wtmpp != (wchar_t)0);
-
- while (iswspace(*wsrcp)) {
- gint mbl;
-
- mbl = wctomb(destp, *wsrcp++);
- if (mbl != -1) {
- destp += mbl;
- line_len += mbl;
- }
+ if (cur_len == 0)
+ break;
}
- *destp = '\0';
-
- g_free(wtmp);
}
- g_free(wsrc);
-
- /* g_print("dest = %s\n", dest); */
+ *destp = '\0';
}
-#endif /* HAVE_LIBJCONV */
+
+#undef LBREAK_IF_REQUIRED
projects / claws.git / blobdiff