diff options
Diffstat (limited to 'camel/gmime-rfc2047.c')
| -rw-r--r-- | camel/gmime-rfc2047.c | 172 |
1 files changed, 156 insertions, 16 deletions
diff --git a/camel/gmime-rfc2047.c b/camel/gmime-rfc2047.c index 72f376d00c..d9ac5f3f9e 100644 --- a/camel/gmime-rfc2047.c +++ b/camel/gmime-rfc2047.c @@ -122,7 +122,7 @@ build_base64_rank_table (void) } -gchar * +static gchar * rfc2047_decode_word (const gchar *data, const gchar *into_what) { const char *charset = strstr (data, "=?"), *encoding, *text, *end; @@ -161,7 +161,7 @@ rfc2047_decode_word (const gchar *data, const gchar *into_what) char *cook_2 = cooked_data; int cook_len = strlen (cook_2); int b_len = 4096; - iconv_t i; + unicode_iconv_t i; strncpy (q, charset, c - charset); q[c - charset] = 0; i = unicode_iconv_open (into_what, q); @@ -237,10 +237,10 @@ gmime_rfc2047_decode (const gchar *data, const gchar *into_what) #define isnt_ascii(a) ((a) <= 0x1f || (a) >= 0x7f) static int -rfc2047_clean (const gchar *string) { - if (strstr (string, "?=")) return 1; - while (*string) { - if (!isnt_ascii ((unsigned char)*string)) +rfc2047_clean (const gchar *string, const gchar *max) { + // if (strstr (string, "?=")) return 1; + while (string < max) { + if (isnt_ascii ((unsigned char)*string)) return 0; string++; } @@ -248,15 +248,17 @@ rfc2047_clean (const gchar *string) { } static gchar * -encode_word (const gchar *string, const gchar *said_charset) +encode_word (const gchar *string, int length, const gchar *said_charset) { - if (rfc2047_clean(string)) + const gchar *max = string + length; + if (rfc2047_clean(string, max)) { /* don't bother encoding it if it has no odd characters in it */ - return g_strdup (string); + return g_strndup (string, length); + } { - char *temp = malloc (strlen(string) * 4 + 1), *t = temp; + char *temp = malloc (length * 4 + 1), *t = temp; t += sprintf (t, "=?%s?q?", said_charset); - while (*string) { + while (string < max) { if (*string == ' ') *(t++) = '_'; else if ((*string <= 0x1f) || (*string >= 0x7f) || (*string == '=') || (*string == '?')) @@ -272,16 +274,112 @@ encode_word (const gchar *string, const gchar *said_charset) } } +static int +words_in(char *a) +{ + int words = 1; + while (*a) { + if (*(a++)==' ') + words++; + } + return words; +} + +struct word_data { + const char *word; + int word_length; + const char *to_encode_in; + char *encoded; + enum { + wt_None, + wt_Address, + } type; +}; + +static int string_can_fit_in(const char *a, int length, const char *charset) +{ + while (length--) { + if (*a < 0x1f || *a >= 0x7f) return 0; + a++; + } + return 1; +} + +static void +show_entry(struct word_data *a) +{ + a->type = wt_None; + + if (string_can_fit_in(a->word, a->word_length, "US-ASCII")) + a->to_encode_in = "US-ASCII"; + + if (a->word[0]=='<' && a->word[a->word_length-1]=='>') { + a->type = wt_Address; + } +} + +static void +break_into_words(const char *string, struct word_data *a, int words) +{ + int i; + for (i=0;i<words;i++) { + + char *next_space = strchr(string, ' '); + + if (!next_space) { + a[i].word = string; + a[i].word_length = strlen(string); + a[i].to_encode_in = NULL; /* i.e. the default */ + + show_entry(a+i); + + return; + } + + a[i].word = string; + a[i].word_length = next_space - string; + a[i].to_encode_in = NULL; + + show_entry(a+i); + + string = next_space + 1; + + } +} + +static void +join_words(struct word_data *a, int words) +{ + int i; + for (i=(words-1);i>0;i--) { + if (a[i].to_encode_in == a[i-1].to_encode_in) { + a[i-1].word_length += 1 + a[i].word_length; + a[i].word = 0; + a[i].word_length = 0; + } + + } +} + +static void show_words(struct word_data *words, int count) +{ + int i; + for (i=0;i<count;i++) + if (words[i].word) + show_entry(words+i); +} + gchar * gmime_rfc2047_encode (const gchar *string, const gchar *charset) { - int temp_len = strlen (string)*4 + 1; + int temp_len = strlen (string)*4 + 1, word_count; char *temp = g_malloc (temp_len), *temp_2 = temp; int string_length = strlen (string); - char *encoded = NULL; + char *encoded = NULL, *p; + struct word_data *words; /* first, let us convert to UTF-8 */ - iconv_t i = unicode_iconv_open ("UTF-8", charset); + unicode_iconv_t i = unicode_iconv_open ("UTF-8", charset); unicode_iconv (i, &string, &string_length, &temp_2, &temp_len); unicode_iconv_close (i); @@ -289,8 +387,43 @@ gmime_rfc2047_encode (const gchar *string, const gchar *charset) *temp_2 = 0; /* now encode it as if it were a single word */ - encoded = encode_word (temp, "UTF-8"); + word_count = words_in ( temp ); + + words = g_malloc(sizeof (struct word_data) * word_count); + break_into_words(temp, words, word_count); + + join_words(words, word_count); + + show_words(words, word_count); + + { + size_t len = 0; + int c = 0; + for (c = 0;c<word_count;c++) { + if (words[c].word) + { + words[c].encoded = encode_word(words[c].word, words[c].word_length, + words[c].to_encode_in ? words[c].to_encode_in : + "UTF-8"); + len += strlen(words[c].encoded) + 1; + } + } + + { + encoded = g_malloc(len+1); + p = encoded; + for (c = 0; c < word_count;c++) if (words[c].word) { + strcpy(p, words[c].encoded); + p += strlen(p); + strcpy(p, " "); + p++; + } + *p = 0; + } + } + + /* real algorithm : @@ -339,8 +472,15 @@ gmime_rfc2047_encode (const gchar *string, const gchar *charset) the text is just in US-ASCII : like 99% of the text that will pass through it) + + + current status : + + Algorithm now partially implemented. + */ - + + g_free(words); g_free(temp); return encoded; |