--- /dev/null
+#include <assert.h>
+#include "string-util.h"
+#include "tag-util.h"
+#include "hex-escape.h"
+
+#define TAG_OP_LIST_INITIAL_SIZE 10
+
+struct _tag_operation_t {
+ const char *tag;
+ notmuch_bool_t remove;
+};
+
+struct _tag_op_list_t {
+ tag_operation_t *ops;
+ size_t count;
+ size_t size;
+};
+
+static tag_parse_status_t
+line_error (tag_parse_status_t status,
+ const char *line,
+ const char *format, ...)
+{
+ va_list va_args;
+
+ va_start (va_args, format);
+
+ fprintf (stderr, status < 0 ? "Error: " : "Warning: ");
+ vfprintf (stderr, format, va_args);
+ fprintf (stderr, " [%s]\n", line);
+ return status;
+}
+
+/*
+ * Test tags for some forbidden cases.
+ *
+ * return: NULL if OK,
+ * explanatory message otherwise.
+ */
+
+static const char *
+illegal_tag (const char *tag, notmuch_bool_t remove)
+{
+
+ if (*tag == '\0' && ! remove)
+ return "empty tag forbidden";
+
+ /* This disallows adding tags starting with "-", in particular the
+ * non-removable tag "-" and enables notmuch tag to take long
+ * options more easily.
+ */
+
+ if (*tag == '-' && ! remove)
+ return "tag starting with '-' forbidden";
+
+ return NULL;
+}
+
+tag_parse_status_t
+parse_tag_line (void *ctx, char *line,
+ tag_op_flag_t flags,
+ char **query_string,
+ tag_op_list_t *tag_ops)
+{
+ char *tok = line;
+ size_t tok_len = 0;
+ char *line_for_error;
+ tag_parse_status_t ret = TAG_PARSE_SUCCESS;
+
+ chomp_newline (line);
+
+ line_for_error = talloc_strdup (ctx, line);
+ if (line_for_error == NULL) {
+ fprintf (stderr, "Error: out of memory\n");
+ return TAG_PARSE_OUT_OF_MEMORY;
+ }
+
+ /* remove leading space */
+ while (*tok == ' ' || *tok == '\t')
+ tok++;
+
+ /* Skip empty and comment lines. */
+ if (*tok == '\0' || *tok == '#') {
+ ret = TAG_PARSE_SKIPPED;
+ goto DONE;
+ }
+
+ tag_op_list_reset (tag_ops);
+
+ /* Parse tags. */
+ while ((tok = strtok_len (tok + tok_len, " ", &tok_len)) != NULL) {
+ notmuch_bool_t remove;
+ char *tag;
+
+ /* Optional explicit end of tags marker. */
+ if (tok_len == 2 && strncmp (tok, "--", tok_len) == 0) {
+ tok = strtok_len (tok + tok_len, " ", &tok_len);
+ if (tok == NULL) {
+ ret = line_error (TAG_PARSE_INVALID, line_for_error,
+ "no query string after --");
+ goto DONE;
+ }
+ break;
+ }
+
+ /* Implicit end of tags. */
+ if (*tok != '-' && *tok != '+')
+ break;
+
+ /* If tag is terminated by NUL, there's no query string. */
+ if (*(tok + tok_len) == '\0') {
+ ret = line_error (TAG_PARSE_INVALID, line_for_error,
+ "no query string");
+ goto DONE;
+ }
+
+ /* Terminate, and start next token after terminator. */
+ *(tok + tok_len++) = '\0';
+
+ remove = (*tok == '-');
+ tag = tok + 1;
+
+ /* Maybe refuse illegal tags. */
+ if (! (flags & TAG_FLAG_BE_GENEROUS)) {
+ const char *msg = illegal_tag (tag, remove);
+ if (msg) {
+ ret = line_error (TAG_PARSE_INVALID, line_for_error, msg);
+ goto DONE;
+ }
+ }
+
+ /* Decode tag. */
+ if (hex_decode_inplace (tag) != HEX_SUCCESS) {
+ ret = line_error (TAG_PARSE_INVALID, line_for_error,
+ "hex decoding of tag %s failed", tag);
+ goto DONE;
+ }
+
+ if (tag_op_list_append (tag_ops, tag, remove)) {
+ ret = line_error (TAG_PARSE_OUT_OF_MEMORY, line_for_error,
+ "aborting");
+ goto DONE;
+ }
+ }
+
+ if (tok == NULL) {
+ /* use a different error message for testing */
+ ret = line_error (TAG_PARSE_INVALID, line_for_error,
+ "missing query string");
+ goto DONE;
+ }
+
+ /* tok now points to the query string */
+ *query_string = tok;
+
+ DONE:
+ talloc_free (line_for_error);
+ return ret;
+}
+
+tag_parse_status_t
+parse_tag_command_line (void *ctx, int argc, char **argv,
+ char **query_str, tag_op_list_t *tag_ops)
+{
+
+ int i;
+
+ tag_op_list_reset (tag_ops);
+
+ for (i = 0; i < argc; i++) {
+ if (strcmp (argv[i], "--") == 0) {
+ i++;
+ break;
+ }
+
+ if (argv[i][0] != '+' && argv[i][0] != '-')
+ break;
+
+ notmuch_bool_t is_remove = argv[i][0] == '-';
+ const char *msg;
+
+ msg = illegal_tag (argv[i] + 1, is_remove);
+ if (msg) {
+ fprintf (stderr, "Error: %s", msg);
+ return TAG_PARSE_INVALID;
+ }
+
+ tag_op_list_append (tag_ops, argv[i] + 1, is_remove);
+ }
+
+ if (tag_op_list_size (tag_ops) == 0) {
+ fprintf (stderr, "Error: 'notmuch tag' requires at least one tag to add or remove.\n");
+ return TAG_PARSE_INVALID;
+ }
+
+ *query_str = query_string_from_args (ctx, argc - i, &argv[i]);
+
+ if (*query_str == NULL || **query_str == '\0') {
+ fprintf (stderr, "Error: notmuch tag requires at least one search term.\n");
+ return TAG_PARSE_INVALID;
+ }
+
+ return TAG_PARSE_SUCCESS;
+}
+
+
+static inline void
+message_error (notmuch_message_t *message,
+ notmuch_status_t status,
+ const char *format, ...)
+{
+ va_list va_args;
+
+ va_start (va_args, format);
+
+ vfprintf (stderr, format, va_args);
+ fprintf (stderr, "Message-ID: %s\n", notmuch_message_get_message_id (message));
+ fprintf (stderr, "Status: %s\n", notmuch_status_to_string (status));
+}
+
+static int
+makes_changes (notmuch_message_t *message,
+ tag_op_list_t *list,
+ tag_op_flag_t flags)
+{
+
+ size_t i;
+
+ notmuch_tags_t *tags;
+ notmuch_bool_t changes = FALSE;
+
+ /* First, do we delete an existing tag? */
+ changes = FALSE;
+ for (tags = notmuch_message_get_tags (message);
+ ! changes && notmuch_tags_valid (tags);
+ notmuch_tags_move_to_next (tags)) {
+ const char *cur_tag = notmuch_tags_get (tags);
+ int last_op = (flags & TAG_FLAG_REMOVE_ALL) ? -1 : 0;
+
+ /* scan backwards to get last operation */
+ i = list->count;
+ while (i > 0) {
+ i--;
+ if (strcmp (cur_tag, list->ops[i].tag) == 0) {
+ last_op = list->ops[i].remove ? -1 : 1;
+ break;
+ }
+ }
+
+ changes = (last_op == -1);
+ }
+ notmuch_tags_destroy (tags);
+
+ if (changes)
+ return TRUE;
+
+ /* Now check for adding new tags */
+ for (i = 0; i < list->count; i++) {
+ notmuch_bool_t exists = FALSE;
+
+ if (list->ops[i].remove)
+ continue;
+
+ for (tags = notmuch_message_get_tags (message);
+ notmuch_tags_valid (tags);
+ notmuch_tags_move_to_next (tags)) {
+ const char *cur_tag = notmuch_tags_get (tags);
+ if (strcmp (cur_tag, list->ops[i].tag) == 0) {
+ exists = TRUE;
+ break;
+ }
+ }
+ notmuch_tags_destroy (tags);
+
+ /* the following test is conservative,
+ * in the sense it ignores cases like +foo ... -foo
+ * but this is OK from a correctness point of view
+ */
+ if (! exists)
+ return TRUE;
+ }
+ return FALSE;
+
+}
+
+notmuch_status_t
+tag_op_list_apply (notmuch_message_t *message,
+ tag_op_list_t *list,
+ tag_op_flag_t flags)
+{
+ size_t i;
+ notmuch_status_t status = 0;
+ tag_operation_t *tag_ops = list->ops;
+
+ if (! (flags & TAG_FLAG_PRE_OPTIMIZED) && ! makes_changes (message, list, flags))
+ return NOTMUCH_STATUS_SUCCESS;
+
+ status = notmuch_message_freeze (message);
+ if (status) {
+ message_error (message, status, "freezing message");
+ return status;
+ }
+
+ if (flags & TAG_FLAG_REMOVE_ALL) {
+ status = notmuch_message_remove_all_tags (message);
+ if (status) {
+ message_error (message, status, "removing all tags");
+ return status;
+ }
+ }
+
+ for (i = 0; i < list->count; i++) {
+ if (tag_ops[i].remove) {
+ status = notmuch_message_remove_tag (message, tag_ops[i].tag);
+ if (status) {
+ message_error (message, status, "removing tag %s", tag_ops[i].tag);
+ return status;
+ }
+ } else {
+ status = notmuch_message_add_tag (message, tag_ops[i].tag);
+ if (status) {
+ message_error (message, status, "adding tag %s", tag_ops[i].tag);
+ return status;
+ }
+
+ }
+ }
+
+ status = notmuch_message_thaw (message);
+ if (status) {
+ message_error (message, status, "thawing message");
+ return status;
+ }
+
+
+ if (flags & TAG_FLAG_MAILDIR_SYNC) {
+ status = notmuch_message_tags_to_maildir_flags (message);
+ if (status) {
+ message_error (message, status, "synching tags to maildir");
+ return status;
+ }
+ }
+
+ return NOTMUCH_STATUS_SUCCESS;
+
+}
+
+
+/* Array of tagging operations (add or remove. Size will be increased
+ * as necessary. */
+
+tag_op_list_t *
+tag_op_list_create (void *ctx)
+{
+ tag_op_list_t *list;
+
+ list = talloc (ctx, tag_op_list_t);
+ if (list == NULL)
+ return NULL;
+
+ list->size = TAG_OP_LIST_INITIAL_SIZE;
+ list->count = 0;
+
+ list->ops = talloc_array (list, tag_operation_t, list->size);
+ if (list->ops == NULL)
+ return NULL;
+
+ return list;
+}
+
+
+int
+tag_op_list_append (tag_op_list_t *list,
+ const char *tag,
+ notmuch_bool_t remove)
+{
+ /* Make room if current array is full. This should be a fairly
+ * rare case, considering the initial array size.
+ */
+
+ if (list->count == list->size) {
+ list->size *= 2;
+ list->ops = talloc_realloc (list, list->ops, tag_operation_t,
+ list->size);
+ if (list->ops == NULL) {
+ fprintf (stderr, "Out of memory.\n");
+ return 1;
+ }
+ }
+
+ /* add the new operation */
+
+ list->ops[list->count].tag = tag;
+ list->ops[list->count].remove = remove;
+ list->count++;
+ return 0;
+}
+
+/*
+ * Is the i'th tag operation a remove?
+ */
+
+notmuch_bool_t
+tag_op_list_isremove (const tag_op_list_t *list, size_t i)
+{
+ assert (i < list->count);
+ return list->ops[i].remove;
+}
+
+/*
+ * Reset a list to contain no operations
+ */
+
+void
+tag_op_list_reset (tag_op_list_t *list)
+{
+ list->count = 0;
+}
+
+/*
+ * Return the number of operations in a list
+ */
+
+size_t
+tag_op_list_size (const tag_op_list_t *list)
+{
+ return list->count;
+}
+
+/*
+ * return the i'th tag in the list
+ */
+
+const char *
+tag_op_list_tag (const tag_op_list_t *list, size_t i)
+{
+ assert (i < list->count);
+ return list->ops[i].tag;
+}
projects / obsolete / notmuch-old / blobdiff