diff options
Diffstat (limited to 'camel/camel-formatter.c')
| -rw-r--r-- | camel/camel-formatter.c | 490 |
1 files changed, 342 insertions, 148 deletions
diff --git a/camel/camel-formatter.c b/camel/camel-formatter.c index f2e35aac2f..49033f05a7 100644 --- a/camel/camel-formatter.c +++ b/camel/camel-formatter.c @@ -28,6 +28,7 @@ #include "camel-log.h" #include <libgnome/libgnome.h> #include <ctype.h> // for isprint +#include <string.h> // for strstr /* * The CamelFormatter takes a mime message, and produces html from it, @@ -54,9 +55,11 @@ static void handle_text_html (CamelFormatter *formatter, CamelDataWrapper *wrapper); static void handle_image (CamelFormatter *formatter, CamelDataWrapper *wrapper); +static void handle_vcard (CamelFormatter *formatter, + CamelDataWrapper *wrapper); static void handle_mime_message (CamelFormatter *formatter, CamelDataWrapper *wrapper); -static void handle_multipart_mixed (CamelFormatter *formatter, +static void handle_multipart_mixed (CamelFormatter *formatter, CamelDataWrapper *wrapper); static void handle_multipart_related (CamelFormatter *formatter, CamelDataWrapper *wrapper); @@ -65,25 +68,27 @@ static void handle_multipart_alternate(CamelFormatter *formatter, static void handle_unknown_type (CamelFormatter *formatter, CamelDataWrapper *wrapper); - - /* encodes some characters into their 'escaped' version; * so '<' turns into '<', and '"' turns into '"' */ -static gchar* encode_entities (const guchar *input, +static gchar* text_to_html (const guchar *input, guint len, guint *encoded_len_return); +/* compares strings case-insensitively */ +static gint strcase_equal (gconstpointer v, gconstpointer v2); -static GtkObjectClass *parent_class = NULL; +/* writes the header info for a mime message into a stream */ +static void write_header_info_to_stream (CamelMimeMessage* mime_message, + CamelStream* stream); -static void _finalize (GtkObject *object); +static GtkObjectClass *parent_class = NULL; struct _CamelFormatterPrivate { CamelMimeMessage *current_root; CamelStream *stream; + GHashTable *attachments; }; -static GHashTable *mime_function_table = NULL; static void debug (const gchar *format, ...) @@ -116,18 +121,31 @@ debug (const gchar *format, ...) void camel_formatter_mime_message_to_html (CamelFormatter* formatter, CamelMimeMessage* mime_message, - CamelStream* stream) + CamelStream* header_stream, + CamelStream* body_stream) { - camel_stream_write_string (stream, "<html><body>\n"); - - formatter->priv->current_root = mime_message; - formatter->priv->stream = stream; + CamelFormatterPrivate* fmt = formatter->priv; + + /* initialize members of our formatter */ + fmt->current_root = mime_message; + fmt->stream = body_stream; + if (fmt->attachments) + g_hash_table_destroy (fmt->attachments); + fmt->attachments = g_hash_table_new (g_str_hash, strcase_equal); + /* write the subj:, to:, from: etc. fields out as html to the + header stream */ + write_header_info_to_stream (mime_message, + header_stream); + + /* write everything to the stream */ + camel_stream_write_string (fmt->stream, "<html><body>\n"); + handle_mime_message ( formatter, CAMEL_DATA_WRAPPER (mime_message)); - camel_stream_write_string (formatter->priv->stream, + camel_stream_write_string (fmt->stream, "\n</body></html>\n"); } @@ -139,51 +157,100 @@ typedef void (*mime_handler_fn) (CamelFormatter *formatter, static gchar* lookup_unique_id (CamelMimeMessage* root, CamelDataWrapper* child) { + /* TODO: assert our return value != NULL */ + return "NYI"; } +static GHashTable* mime_function_table; + +static gchar* +get_bonobo_tag_for_object (CamelFormatter* formatter, + CamelDataWrapper* wrapper, + gchar* mimetype) +{ + + CamelMimeMessage* root = formatter->priv->current_root; + char* uid = lookup_unique_id (root, wrapper); + const char* goad_id = gnome_mime_get_value ( + mimetype, "bonobo-goad_id"); + + g_assert (root); + + if (goad_id) { + char* tag = g_strdup_printf ( + "<object classid=\"%s\" uid=\"camel://%s\">", + goad_id, uid); + return tag; + } + else + return NULL; +} + -/* takes a mimetype, calls a function to handle it */ +/* + * This takes a mimetype, and tries to map that mimetype to a function + * or a bonobo object. + * + * - If it's mapped to a bonobo object, this function prints a tag + * into the stream, designating the bonobo object and a place that + * the bonobo object can find data to hydrate from + * + * - otherwise, the mimetype is mapped to another function, which can + * print into the stream + */ static void call_handler_function (CamelFormatter* formatter, CamelDataWrapper* wrapper, - gchar* mimetype) + gchar* mimetype_whole, /* ex. "image/jpeg" */ + gchar* mimetype_main) /* ex. "image" */ { - mime_handler_fn handler_function; - - /* try to find a handler function in our own lookup table */ - handler_function = g_hash_table_lookup ( - mime_function_table, mimetype); - - /* If there's no such handler function, try to find bonobo - * object to show the object */ - if (!handler_function) - { - CamelMimeMessage* root = formatter->priv->current_root; - char* uid = lookup_unique_id (root, wrapper); - const char* goad_id = gnome_mime_get_value ( - mimetype, "bonobo-goad_id"); - - g_assert (root && uid); - - if (goad_id) { - char* tag = g_strdup_printf ( - "<object classid=\"%s\" uid=\"%s\">", - goad_id, uid); - - camel_stream_write_string (formatter->priv->stream, - tag); - } - /* we don't know how to show something of this - mimetype; punt */ - else { - debug ("no function or bonobo object found for mimetype \"%s\"\n", - mimetype); - handler_function = handle_unknown_type; + mime_handler_fn handler_function = NULL; + + g_assert (mimetype_whole || mimetype_main); +/* + * Try to find a handler function in our own lookup table + */ + if (mimetype_whole) + handler_function = g_hash_table_lookup ( + mime_function_table, mimetype_whole); + + if (mimetype_main && !handler_function) + handler_function = g_hash_table_lookup ( + mime_function_table, mimetype_main); +/* + * Upon failure, try to find a bonobo object to show the object + */ + if (!handler_function) { + + gchar* bonobo_tag = NULL; + + if (mimetype_whole) + bonobo_tag = get_bonobo_tag_for_object ( + formatter, wrapper, mimetype_whole); + + if (mimetype_main && !bonobo_tag) + bonobo_tag = get_bonobo_tag_for_object ( + formatter, wrapper, mimetype_main); + + if (bonobo_tag) { + + /* we can print a tag, and return! */ + camel_stream_write_string (formatter->priv->stream, bonobo_tag); + g_free (bonobo_tag); + + return; } } - else { +/* + * Use either a handler function we've found, or a default handler + */ + if (handler_function) (*handler_function)(formatter, wrapper); + else { + handle_unknown_type (formatter, wrapper); + debug ("no function or bonobo object found for mimetype \"%s\"\n", + mimetype_whole || mimetype_main); } } @@ -195,81 +262,92 @@ call_handler_function (CamelFormatter* formatter, /* This routine was originally written by Daniel Velliard, (C) 1998 World Wide Web Consortium. - It will (for example) turn the input 'ab <c>' into 'ab <c>' */ + It will (for example) turn the input 'ab <c>' into 'ab <c>' + + It has also been altered to turn '\n' into <br>. +*/ static gchar * -encode_entities (const guchar *input, +text_to_html (const guchar *input, guint len, guint *encoded_len_return) { - const guchar *cur = input; - guchar *buffer = NULL; - guchar *out = NULL; - gint buffer_size = 0; - guint count; - - /* Allocate a translation buffer. */ - buffer_size = 1000; - buffer = g_malloc (buffer_size); - - out = buffer; - count = 0; - - while (count < len) { - if (out - buffer > buffer_size - 100) { - gint index = out - buffer; - - buffer_size *= 2; - buffer = g_realloc (buffer, buffer_size); - out = &buffer[index]; - } + const guchar *cur = input; + guchar *buffer = NULL; + guchar *out = NULL; + gint buffer_size = 0; + guint count; + + /* Allocate a translation buffer. */ + buffer_size = 1000; + buffer = g_malloc (buffer_size); + + out = buffer; + count = 0; + + while (count < len) { + if (out - buffer > buffer_size - 100) { + gint index = out - buffer; + + buffer_size *= 2; + buffer = g_realloc (buffer, buffer_size); + out = &buffer[index]; + } - /* By default one has to encode at least '<', '>', '"' and '&'. */ - - if (*cur == '<') { - *out++ = '&'; - *out++ = 'l'; - *out++ = 't'; - *out++ = ';'; - } else if (*cur == '>') { - *out++ = '&'; - *out++ = 'g'; - *out++ = 't'; - *out++ = ';'; - } else if (*cur == '&') { - *out++ = '&'; - *out++ = 'a'; - *out++ = 'm'; - *out++ = 'p'; - *out++ = ';'; - } else if (*cur == '"') { - *out++ = '&'; - *out++ = 'q'; - *out++ = 'u'; - *out++ = 'o'; - *out++ = 't'; - *out++ = ';'; - } else if (((*cur >= 0x20) && (*cur < 0x80)) - || (*cur == '\n') || (*cur == '\r') || (*cur == '\t')) { - /* Default case, just copy. */ - *out++ = *cur; - } else { - char buf[10], *ptr; - - g_snprintf(buf, 9, "&#%d;", *cur); - - ptr = buf; - while (*ptr != 0) - *out++ = *ptr++; - } + /* By default one has to encode at least '<', '>', '"' and '&'. */ + if (*cur == '<') { + *out++ = '&'; + *out++ = 'l'; + *out++ = 't'; + *out++ = ';'; + } else if (*cur == '>') { + *out++ = '&'; + *out++ = 'g'; + *out++ = 't'; + *out++ = ';'; + } else if (*cur == '&') { + *out++ = '&'; + *out++ = 'a'; + *out++ = 'm'; + *out++ = 'p'; + *out++ = ';'; + } else if (*cur == '"') { + *out++ = '&'; + *out++ = 'q'; + *out++ = 'u'; + *out++ = 'o'; + *out++ = 't'; + *out++ = ';'; + } else if (((*cur >= 0x20) && (*cur < 0x80)) + || (*cur == '\n') || (*cur == '\r') || (*cur == '\t')) { + /* Default case, just copy. */ + *out++ = *cur; + } else { + char buf[10], *ptr; + + g_snprintf(buf, 9, "&#%d;", *cur); + + ptr = buf; + while (*ptr != 0) + *out++ = *ptr++; + } - cur++; - count++; - } + /* turn newlines into <br> */ + if (*cur == '\n') { + *out++ = '<'; + *out++ = 'b'; + *out++ = 'r'; + *out++ = '>'; + } + - *out = 0; - *encoded_len_return = out - buffer; + cur++; + count++; + } - return buffer; + *out = 0; + *encoded_len_return = out - buffer; + + return buffer; } @@ -279,7 +357,7 @@ write_field_to_stream (const gchar* description, const gchar* value, { gchar *s; guint ev_length; - gchar* encoded_value = value?encode_entities ( + gchar* encoded_value = value?text_to_html ( value, strlen(value), &ev_length):""; int i; for (i = 0; i < strlen (value); i++) @@ -405,21 +483,21 @@ handle_text_plain (CamelFormatter *formatter, CamelDataWrapper *wrapper) /* If there's any text, write it to the stream */ if (simple_data_wrapper->byte_array->len != 0) { + int returned_strlen; - debug ("yay, simple_data_wrapper->byte_array->len != 0\n"); + g_assert (simple_data_wrapper->byte_array->data); /* replace '<' with '<', etc. */ - text = encode_entities (simple_data_wrapper->byte_array->data, - simple_data_wrapper->byte_array->len, - &returned_strlen); + text = text_to_html (simple_data_wrapper->byte_array->data, + simple_data_wrapper->byte_array->len, + &returned_strlen); camel_stream_write_string (formatter->priv->stream, text); g_free (text); } - else { - debug ("boo, simple_data_wrapper->byte_array->len == 0\n"); - } + else + debug ("Warning: handle_text_plain: length of byte array is zero!\n"); debug ("handle_text_plain: exiting\n"); } @@ -427,10 +505,32 @@ handle_text_plain (CamelFormatter *formatter, CamelDataWrapper *wrapper) static void handle_text_html (CamelFormatter *formatter, CamelDataWrapper *wrapper) { + CamelSimpleDataWrapper* simple_data_wrapper; + gchar* text; + debug ("handle_text_html: entered\n"); - /* TODO: replace 'body' tag with 'table' tag; delete - everything prior to the 'body' tag */ + /* text is embodied in a CamelSimpleDataWrapper */ + g_assert (CAMEL_IS_SIMPLE_DATA_WRAPPER (wrapper)); + simple_data_wrapper = CAMEL_SIMPLE_DATA_WRAPPER (wrapper); + + /* If there's any text, write it to the stream */ + if (simple_data_wrapper->byte_array->len != 0) { + + int returned_strlen; + + g_assert (simple_data_wrapper->byte_array->data); + + /* replace '<' with '<', etc. */ + text = text_to_html (simple_data_wrapper->byte_array->data, + simple_data_wrapper->byte_array->len, + &returned_strlen); + + camel_stream_write_string (formatter->priv->stream, text); + g_free (text); + } + else + debug ("Warning: handle_text_html: length of byte array is zero!\n"); debug ("handle_text_html: exiting\n"); } @@ -444,7 +544,6 @@ handle_image (CamelFormatter *formatter, CamelDataWrapper *wrapper) debug ("handle_image: entered\n"); uuid = lookup_unique_id (formatter->priv->current_root, wrapper); - g_assert (uuid); tag = g_strdup_printf ("<img src=\"%s\">\n", uuid); camel_stream_write_string (formatter->priv->stream, tag); @@ -456,6 +555,18 @@ handle_image (CamelFormatter *formatter, CamelDataWrapper *wrapper) } static void +handle_vcard (CamelFormatter *formatter, CamelDataWrapper *wrapper) +{ + gchar* vcard; + debug ("handle_vcard: entered\n"); + +// camel_stream_write_string (formatter->priv->stream, vcard); +// g_free (vcard); + + debug ("handle_vcard: exiting\n"); +} + +static void handle_mime_message (CamelFormatter *formatter, CamelDataWrapper *wrapper) { @@ -469,13 +580,10 @@ handle_mime_message (CamelFormatter *formatter, camel_stream_write_string (formatter->priv->stream, "<table width=95% border=1><tr><td>\n\n"); - /* write the subj:, to:, from: etc. fields out as html */ - write_header_info_to_stream (mime_message, - formatter->priv->stream); - /* dispatch the correct handler function for the mime type */ call_handler_function (formatter, message_contents, - MIME_TYPE_WHOLE (mime_message)); + MIME_TYPE_WHOLE (mime_message), + MIME_TYPE_MAIN (mime_message)); /* close up the table we opened */ camel_stream_write_string (formatter->priv->stream, @@ -504,6 +612,10 @@ find_preferred_displayable_body_part_in_multipart_alternative ( for (i = 0; i < max_multiparts; i++) { CamelMimeBodyPart* body_part = camel_multipart_get_part (multipart, i); + + if (!strcase_equal (MIME_TYPE_MAIN (body_part), "text")) + continue; + if (strcase_equal (MIME_TYPE_SUB (body_part), "plain")) { plain_part = CAMEL_MIME_PART (body_part); } @@ -519,16 +631,70 @@ find_preferred_displayable_body_part_in_multipart_alternative ( return NULL; } +/* we're maintaining a hashtable of mimetypes -> functions; + * those functions have the following signature...*/ +typedef void (*multipart_foreach_fn) (CamelMimeBodyPart* mime_part, + CamelFormatter* stream, + gpointer user_data); + +static void +multipart_foreach (CamelMultipart *multipart, + multipart_foreach_fn* fn, + CamelFormatter* formatter, + gpointer user_data) +{ + int i, max_multiparts; + + max_multiparts = camel_multipart_get_number (multipart); + for (i = 0; i < max_multiparts; i++) { + CamelMimeBodyPart* body_part = + camel_multipart_get_part (multipart, i); + + (*fn)(body_part, formatter, user_data); + } +} + + +/* called for each body part in a multipart/mixed, through + 'multipart_foreach' */ +static void +print_camel_body_part (CamelMimeBodyPart* body_part, + CamelFormatter* formatter, + gboolean* text_printed_yet) +{ + CamelDataWrapper* contents = + camel_medium_get_content_object (CAMEL_MEDIUM (body_part)); + gboolean is_text = + strcase_equal (MIME_TYPE_MAIN (body_part), "text"); + + if (is_text && *text_printed_yet) + return; + + call_handler_function (formatter, contents, MIME_TYPE_WHOLE (body_part), + MIME_TYPE_MAIN (body_part)); + camel_stream_write_string (formatter->priv->stream, "\n<hr>\n"); +} + + +/* Our policy here is this: + (1) print text/(plain|html) parts found + (2) print vcards and images inline + (3) treat all other parts as attachments */ static void handle_multipart_mixed (CamelFormatter *formatter, CamelDataWrapper *wrapper) { CamelMultipart* mp = CAMEL_MULTIPART (wrapper); + gboolean text_printed_yet = FALSE; + debug ("handle_multipart_mixed: entered\n"); - /* TODO: serialize items in CamelMultipart */ - + multipart_foreach ( + mp, (multipart_foreach_fn*)print_camel_body_part, + formatter, + &text_printed_yet); + debug ("handle_multipart_mixed: exiting\n"); } @@ -539,22 +705,45 @@ handle_multipart_related (CamelFormatter *formatter, CamelMultipart* mp = CAMEL_MULTIPART (wrapper); debug ("handle_multipart_related: entered\n"); + debug ("handle_multipart_related: NYI!!\n"); + /* TODO: read RFC, in terms of how a one message may refer to another object */ debug ("handle_multipart_related: exiting\n"); } +/* + The current policy for multipart/alternate is this: + + if (we find a text/html body part) + we print it + else if (we find a text/plain body part) + we print it + else + we print nothing +*/ static void handle_multipart_alternate (CamelFormatter *formatter, CamelDataWrapper *wrapper) { - CamelMultipart* mp = CAMEL_MULTIPART (wrapper); + CamelMultipart* multipart = CAMEL_MULTIPART (wrapper); + CamelMimePart* mime_part; + debug ("handle_multipart_alternate: entered\n"); - /* TODO: - find_preferred_displayable_body_part_in_multipart_alternate */ + mime_part = find_preferred_displayable_body_part_in_multipart_alternative( + multipart); + if (mime_part) { + + CamelDataWrapper* contents = + camel_medium_get_content_object (CAMEL_MEDIUM (mime_part)); + call_handler_function (formatter, contents, + MIME_TYPE_WHOLE (mime_part), + MIME_TYPE_MAIN (mime_part)); + } + debug ("handle_multipart_alternate: exiting\n"); } @@ -567,7 +756,6 @@ handle_unknown_type (CamelFormatter *formatter, char* uid = lookup_unique_id (root, wrapper); debug ("handle_unknown_type: entered\n"); - g_assert (uid); tag = g_strdup_printf ("<a href=\"camel://%s\">click-me-to-save</a>\n", uid); @@ -588,6 +776,18 @@ camel_formatter_new () } +static void +_finalize (GtkObject* object) +{ + CamelFormatter *formatter = CAMEL_FORMATTER (object); + + if (formatter->priv->attachments) + g_hash_table_destroy (formatter->priv->attachments); + + g_free (formatter->priv); + + GTK_OBJECT_CLASS (parent_class)->finalize (object); +} static void camel_formatter_class_init (CamelFormatterClass *camel_formatter_class) @@ -597,7 +797,8 @@ camel_formatter_class_init (CamelFormatterClass *camel_formatter_class) parent_class = gtk_type_class (gtk_object_get_type ()); - mime_function_table = g_hash_table_new (g_str_hash, strcase_equal); + mime_function_table = + g_hash_table_new (g_str_hash, strcase_equal); #define ADD_HANDLER(a,b) g_hash_table_insert (mime_function_table, a, b) @@ -606,14 +807,15 @@ camel_formatter_class_init (CamelFormatterClass *camel_formatter_class) ADD_HANDLER ("text/html", handle_text_html); ADD_HANDLER ("multipart/alternate", handle_multipart_alternate); ADD_HANDLER ("multipart/related", handle_multipart_related); - ADD_HANDLER ("multipart/related", handle_multipart_mixed); + ADD_HANDLER ("multipart/mixed", handle_multipart_mixed); ADD_HANDLER ("message/rfc822", handle_mime_message); - ADD_HANDLER ("image/", handle_image); + ADD_HANDLER ("image/", handle_image); + ADD_HANDLER ("vcard/", handle_vcard); /* virtual method overload */ gtk_object_class->finalize = _finalize; } - + static void camel_formatter_init (gpointer object, gpointer klass) @@ -650,15 +852,7 @@ camel_formatter_get_type (void) } -static void -_finalize (GtkObject* object) -{ - CamelFormatter *formatter = CAMEL_FORMATTER (object); - g_free (formatter->priv); - - GTK_OBJECT_CLASS (parent_class)->finalize (object); -} |