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+ id 1SkLdK-0004kd-8q; Thu, 28 Jun 2012 21:48:10 +0100\r
+From: Mark Walters <markwalters1009@gmail.com>\r
+To: Ethan Glasser-Camp <ethan.glasser.camp@gmail.com>, notmuch@notmuchmail.org\r
+Subject: Re: [RFC PATCH 01/14] All access to mail files goes through the\r
+ mailstore module\r
+In-Reply-To: <1340656899-5644-2-git-send-email-ethan@betacantrips.com>\r
+References: <1340656899-5644-1-git-send-email-ethan@betacantrips.com>\r
+ <1340656899-5644-2-git-send-email-ethan@betacantrips.com>\r
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+Date: Thu, 28 Jun 2012 21:48:03 +0100\r
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+\r
+\r
+On Mon, 25 Jun 2012, Ethan Glasser-Camp <ethan.glasser.camp@gmail.com> wrot=\r
+e:\r
+> This commit introduces the mailstore module which provides two\r
+> functions, notmuch_mailstore_open and notmuch_mailstore_close. These\r
+> functions are currently just stub calls to fopen and fclose, but later\r
+> can be made more complex in order to support mail storage systems\r
+> where one message might not be one file.\r
+\r
+I would prefer this patch split into two: one doing the stuff mentioned\r
+in the commit message and one the notmuch_sha1_of_message/\r
+notmuch_sha1_of_file change (or at least mention this latter change in\r
+the commit message).=20\r
+\r
+Best wishes\r
+\r
+Mark=20\r
+\r
+> Signed-off-by: Ethan Glasser-Camp <ethan@betacantrips.com>\r
+> ---\r
+> lib/Makefile.local | 1 +\r
+> lib/database.cc | 2 +-\r
+> lib/index.cc | 2 +-\r
+> lib/mailstore.c | 34 ++++++++++++++++++++++++\r
+> lib/message-file.c | 6 ++---\r
+> lib/notmuch-private.h | 3 +++\r
+> lib/notmuch.h | 16 +++++++++++\r
+> lib/sha1.c | 70 +++++++++++++++++++++++++++++++++++++------=\r
+------\r
+> mime-node.c | 4 +--\r
+> notmuch-show.c | 12 ++++-----\r
+> 10 files changed, 120 insertions(+), 30 deletions(-)\r
+> create mode 100644 lib/mailstore.c\r
+>\r
+> diff --git a/lib/Makefile.local b/lib/Makefile.local\r
+> index 8a9aa28..cfc77bb 100644\r
+> --- a/lib/Makefile.local\r
+> +++ b/lib/Makefile.local\r
+> @@ -51,6 +51,7 @@ libnotmuch_c_srcs =3D \\r
+> $(dir)/filenames.c \\r
+> $(dir)/string-list.c \\r
+> $(dir)/libsha1.c \\r
+> + $(dir)/mailstore.c \\r
+> $(dir)/message-file.c \\r
+> $(dir)/messages.c \\r
+> $(dir)/sha1.c \\r
+> diff --git a/lib/database.cc b/lib/database.cc\r
+> index 761dc1a..c035edc 100644\r
+> --- a/lib/database.cc\r
+> +++ b/lib/database.cc\r
+> @@ -1773,7 +1773,7 @@ notmuch_database_add_message (notmuch_database_t *n=\r
+otmuch,\r
+> if (message_id =3D=3D NULL ) {\r
+> /* No message-id at all, let's generate one by taking a\r
+> * hash over the file's contents. */\r
+> - char *sha1 =3D notmuch_sha1_of_file (filename);\r
+> + char *sha1 =3D notmuch_sha1_of_message (filename);\r
+>=20=20\r
+> /* If that failed too, something is really wrong. Give up. */\r
+> if (sha1 =3D=3D NULL) {\r
+> diff --git a/lib/index.cc b/lib/index.cc\r
+> index e377732..b607e82 100644\r
+> --- a/lib/index.cc\r
+> +++ b/lib/index.cc\r
+> @@ -441,7 +441,7 @@ _notmuch_message_index_file (notmuch_message_t *messa=\r
+ge,\r
+> initialized =3D 1;\r
+> }\r
+>=20=20\r
+> - file =3D fopen (filename, "r");\r
+> + file =3D notmuch_mailstore_open (filename);\r
+> if (! file) {\r
+> fprintf (stderr, "Error opening %s: %s\n", filename, strerror (errno));\r
+> ret =3D NOTMUCH_STATUS_FILE_ERROR;\r
+> diff --git a/lib/mailstore.c b/lib/mailstore.c\r
+> new file mode 100644\r
+> index 0000000..48acd47\r
+> --- /dev/null\r
+> +++ b/lib/mailstore.c\r
+> @@ -0,0 +1,34 @@\r
+> +/* mailstore.c - code to access individual messages\r
+> + *\r
+> + * Copyright =C2=A9 2009 Carl Worth\r
+> + *\r
+> + * This program is free software: you can redistribute it and/or modify\r
+> + * it under the terms of the GNU General Public License as published by\r
+> + * the Free Software Foundation, either version 3 of the License, or\r
+> + * (at your option) any later version.\r
+> + *\r
+> + * This program is distributed in the hope that it will be useful,\r
+> + * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+> + * GNU General Public License for more details.\r
+> + *\r
+> + * You should have received a copy of the GNU General Public License\r
+> + * along with this program. If not, see http://www.gnu.org/licenses/ .\r
+> + *\r
+> + * Author: Carl Worth <cworth@cworth.org>\r
+> + */\r
+> +#include <stdio.h>\r
+> +\r
+> +#include "notmuch-private.h"\r
+> +\r
+> +FILE *\r
+> +notmuch_mailstore_open (const char *filename)\r
+> +{\r
+> + return fopen (filename, "r");\r
+> +}\r
+> +\r
+> +int\r
+> +notmuch_mailstore_close (FILE *file)\r
+> +{\r
+> + return fclose (file);\r
+> +}\r
+> diff --git a/lib/message-file.c b/lib/message-file.c\r
+> index 915aba8..271389c 100644\r
+> --- a/lib/message-file.c\r
+> +++ b/lib/message-file.c\r
+> @@ -86,7 +86,7 @@ _notmuch_message_file_destructor (notmuch_message_file_=\r
+t *message)\r
+> g_hash_table_destroy (message->headers);\r
+>=20=20\r
+> if (message->file)\r
+> - fclose (message->file);\r
+> + notmuch_mailstore_close (message->file);\r
+>=20=20\r
+> return 0;\r
+> }\r
+> @@ -104,7 +104,7 @@ _notmuch_message_file_open_ctx (void *ctx, const char=\r
+ *filename)\r
+>=20=20\r
+> talloc_set_destructor (message, _notmuch_message_file_destructor);\r
+>=20=20\r
+> - message->file =3D fopen (filename, "r");\r
+> + message->file =3D notmuch_mailstore_open (filename);\r
+> if (message->file =3D=3D NULL)\r
+> goto FAIL;\r
+>=20=20\r
+> @@ -361,7 +361,7 @@ notmuch_message_file_get_header (notmuch_message_file=\r
+_t *message,\r
+> }\r
+>=20=20\r
+> if (message->parsing_finished) {\r
+> - fclose (message->file);\r
+> + notmuch_mailstore_close (message->file);\r
+> message->file =3D NULL;\r
+> }\r
+>=20=20\r
+> diff --git a/lib/notmuch-private.h b/lib/notmuch-private.h\r
+> index bfb4111..5dbe821 100644\r
+> --- a/lib/notmuch-private.h\r
+> +++ b/lib/notmuch-private.h\r
+> @@ -468,6 +468,9 @@ notmuch_sha1_of_string (const char *str);\r
+> char *\r
+> notmuch_sha1_of_file (const char *filename);\r
+>=20=20\r
+> +char *\r
+> +notmuch_sha1_of_message (const char *filename);\r
+> +\r
+> /* string-list.c */\r
+>=20=20\r
+> typedef struct _notmuch_string_node {\r
+> diff --git a/lib/notmuch.h b/lib/notmuch.h\r
+> index 3633bed..0ca367b 100644\r
+> --- a/lib/notmuch.h\r
+> +++ b/lib/notmuch.h\r
+> @@ -1233,6 +1233,22 @@ notmuch_message_thaw (notmuch_message_t *message);\r
+> void\r
+> notmuch_message_destroy (notmuch_message_t *message);\r
+>=20=20\r
+> +/* Get access to the underlying data of a message.\r
+> + *\r
+> + * Right now, all messages are simple files in maildirs, but this is\r
+> + * hopefully subject to change.\r
+> + *\r
+> + * If the returned FILE* is not NULL, be sure to call\r
+> + * notmuch_mailstore_close when you're done with it.\r
+> + */\r
+> +FILE *\r
+> +notmuch_mailstore_open (const char *filename);\r
+> +\r
+> +/* Release any resources associated with this file.\r
+> + */\r
+> +int\r
+> +notmuch_mailstore_close (FILE *file);\r
+> +\r
+> /* Is the given 'tags' iterator pointing at a valid tag.\r
+> *\r
+> * When this function returns TRUE, notmuch_tags_get will return a\r
+> diff --git a/lib/sha1.c b/lib/sha1.c\r
+> index cc48108..462c07e 100644\r
+> --- a/lib/sha1.c\r
+> +++ b/lib/sha1.c\r
+> @@ -64,19 +64,11 @@ notmuch_sha1_of_string (const char *str)\r
+> return _hex_of_sha1_digest (digest);\r
+> }\r
+>=20=20\r
+> -/* Create a hexadecimal string version of the SHA-1 digest of the\r
+> - * contents of the named file.\r
+> - *\r
+> - * This function returns a newly allocated string which the caller\r
+> - * should free() when finished.\r
+> - *\r
+> - * If any error occurs while reading the file, (permission denied,\r
+> - * file not found, etc.), this function returns NULL.\r
+> +/* Internal function to feed the contents of a FILE * to the sha1 functi=\r
+ons.\r
+> */\r
+> -char *\r
+> -notmuch_sha1_of_file (const char *filename)\r
+> -{\r
+> - FILE *file;\r
+> +\r
+> +static char *\r
+> +_notmuch_sha1_of_filep (FILE *file){\r
+> #define BLOCK_SIZE 4096\r
+> unsigned char block[BLOCK_SIZE];\r
+> size_t bytes_read;\r
+> @@ -84,14 +76,10 @@ notmuch_sha1_of_file (const char *filename)\r
+> unsigned char digest[SHA1_DIGEST_SIZE];\r
+> char *result;\r
+>=20=20\r
+> - file =3D fopen (filename, "r");\r
+> - if (file =3D=3D NULL)\r
+> - return NULL;\r
+> -\r
+> sha1_begin (&sha1);\r
+>=20=20\r
+> while (1) {\r
+> - bytes_read =3D fread (block, 1, 4096, file);\r
+> + bytes_read =3D fread (block, 1, BLOCK_SIZE, file);\r
+> if (bytes_read =3D=3D 0) {\r
+> if (feof (file)) {\r
+> break;\r
+> @@ -108,8 +96,56 @@ notmuch_sha1_of_file (const char *filename)\r
+>=20=20\r
+> result =3D _hex_of_sha1_digest (digest);\r
+>=20=20\r
+> + return result;\r
+> +}\r
+> +\r
+> +/* Create a hexadecimal string version of the SHA-1 digest of the\r
+> + * contents of the named file.\r
+> + *\r
+> + * This function returns a newly allocated string which the caller\r
+> + * should free() when finished.\r
+> + *\r
+> + * If any error occurs while reading the file, (permission denied,\r
+> + * file not found, etc.), this function returns NULL.\r
+> + */\r
+> +char *\r
+> +notmuch_sha1_of_file (const char *filename)\r
+> +{\r
+> + FILE *file;\r
+> + char *result;\r
+> + file =3D fopen (filename, "r");\r
+> + if (file =3D=3D NULL)\r
+> + return NULL;\r
+> +\r
+> + result =3D _notmuch_sha1_of_filep (file);\r
+> +\r
+> fclose (file);\r
+>=20=20\r
+> return result;\r
+> }\r
+>=20=20\r
+> +/* Create a hexadecimal string version of the SHA-1 digest of the\r
+> + * contents of the named message, which is accessed via a mailstore.\r
+> + *\r
+> + * This function returns a newly allocated string which the caller\r
+> + * should free() when finished.\r
+> + *\r
+> + * If any error occurs while reading the file, (permission denied,\r
+> + * file not found, etc.), this function returns NULL.\r
+> + */\r
+> +char *\r
+> +notmuch_sha1_of_message (const char *filename)\r
+> +{\r
+> + FILE *file;\r
+> + char *result;\r
+> +\r
+> + file =3D notmuch_mailstore_open (filename);\r
+> + if (file =3D=3D NULL)\r
+> + return NULL;\r
+> +\r
+> + result =3D _notmuch_sha1_of_filep (file);\r
+> +\r
+> + notmuch_mailstore_close (file);\r
+> +\r
+> + return result;\r
+> +}\r
+> diff --git a/mime-node.c b/mime-node.c\r
+> index 97e8b48..a5c60d0 100644\r
+> --- a/mime-node.c\r
+> +++ b/mime-node.c\r
+> @@ -49,7 +49,7 @@ _mime_node_context_free (mime_node_context_t *res)\r
+> g_object_unref (res->stream);\r
+>=20=20\r
+> if (res->file)\r
+> - fclose (res->file);\r
+> + notmuch_mailstore_close (res->file);\r
+>=20=20\r
+> return 0;\r
+> }\r
+> @@ -79,7 +79,7 @@ mime_node_open (const void *ctx, notmuch_message_t *mes=\r
+sage,\r
+> }\r
+> talloc_set_destructor (mctx, _mime_node_context_free);\r
+>=20=20\r
+> - mctx->file =3D fopen (filename, "r");\r
+> + mctx->file =3D notmuch_mailstore_open (filename);\r
+> if (! mctx->file) {\r
+> fprintf (stderr, "Error opening %s: %s\n", filename, strerror (errno));\r
+> status =3D NOTMUCH_STATUS_FILE_ERROR;\r
+> diff --git a/notmuch-show.c b/notmuch-show.c\r
+> index 8247f1d..2847d25 100644\r
+> --- a/notmuch-show.c\r
+> +++ b/notmuch-show.c\r
+> @@ -692,7 +692,7 @@ format_part_mbox (const void *ctx, mime_node_t *node,=\r
+ unused (int indent),\r
+> INTERNAL_ERROR ("format_part_mbox requires a root part");\r
+>=20=20\r
+> filename =3D notmuch_message_get_filename (message);\r
+> - file =3D fopen (filename, "r");\r
+> + file =3D notmuch_mailstore_open (filename);\r
+> if (file =3D=3D NULL) {\r
+> fprintf (stderr, "Failed to open %s: %s\n",\r
+> filename, strerror (errno));\r
+> @@ -716,7 +716,7 @@ format_part_mbox (const void *ctx, mime_node_t *node,=\r
+ unused (int indent),\r
+>=20=20\r
+> printf ("\n");\r
+>=20=20\r
+> - fclose (file);\r
+> + notmuch_mailstore_close (file);\r
+>=20=20\r
+> return NOTMUCH_STATUS_SUCCESS;\r
+> }\r
+> @@ -739,7 +739,7 @@ format_part_raw (unused (const void *ctx), mime_node_=\r
+t *node,\r
+> return NOTMUCH_STATUS_FILE_ERROR;\r
+> }\r
+>=20=20\r
+> - file =3D fopen (filename, "r");\r
+> + file =3D notmuch_mailstore_open (filename);\r
+> if (file =3D=3D NULL) {\r
+> fprintf (stderr, "Error: Cannot open file %s: %s\n", filename, stre=\r
+rror (errno));\r
+> return NOTMUCH_STATUS_FILE_ERROR;\r
+> @@ -749,18 +749,18 @@ format_part_raw (unused (const void *ctx), mime_nod=\r
+e_t *node,\r
+> size =3D fread (buf, 1, sizeof (buf), file);\r
+> if (ferror (file)) {\r
+> fprintf (stderr, "Error: Read failed from %s\n", filename);\r
+> - fclose (file);\r
+> + notmuch_mailstore_close (file);\r
+> return NOTMUCH_STATUS_FILE_ERROR;\r
+> }\r
+>=20=20\r
+> if (fwrite (buf, size, 1, stdout) !=3D 1) {\r
+> fprintf (stderr, "Error: Write failed\n");\r
+> - fclose (file);\r
+> + notmuch_mailstore_close (file);\r
+> return NOTMUCH_STATUS_FILE_ERROR;\r
+> }\r
+> }\r
+>=20=20\r
+> - fclose (file);\r
+> + notmuch_mailstore_close (file);\r
+> return NOTMUCH_STATUS_SUCCESS;\r
+> }\r
+>=20=20\r
+> --=20\r
+> 1.7.9.5\r
+>\r
+> _______________________________________________\r
+> notmuch mailing list\r
+> notmuch@notmuchmail.org\r
+> http://notmuchmail.org/mailman/listinfo/notmuch\r
projects / notmuch-archives.git / commitdiff