/*
- To use it as a super-history-search for bash:
- mymail --bash <(history)
+ This command is a dumb mail indexer. It can either (1) scan
+ directories containing mbox files, and create a db file containing
+ for each mail a list of fields computed from the header, or (2)
+ read such a db file and get all the mails matching regexp-defined
+ conditions on the fields.
+
+ It is low-tech, simple, light and fast.
*/
char *name;
char *regexp_string;
regex_t regexp;
- FILE *db_file;
};
-char *db_filename_prefix;
+char *db_filename;
+char *search_pattern;
+
+int paranoid;
+int action_index;
+
+char *segment_next_field(char *current) {
+ while(*current && *current != ' ') current++;
+ *current = '\0'; current++;
+ while(*current && *current == ' ') current++;
+ return current;
+}
+
+void remove_eof(char *c) {
+ while(*c && *c != '\n' && *c != '\r') c++;
+ *c = '\0';
+}
/********************************************************************/
fprintf(out, "\n");
}
-void read_file(const char *input_filename,
- int nb_fields_to_parse, struct parsable_field *fields_to_parse) {
+/*********************************************************************/
+
+void search_in_db(const char *search_name, const char *search_regexp_string,
+ FILE *db_file) {
+ char raw_line[BUFFER_SIZE];
+ char current_mail_filename[BUFFER_SIZE];
+ unsigned long int current_position_in_mail;
+ char *name, *value;
+ regex_t regexp;
+ int already_written;
+
+ if(regcomp(®exp,
+ search_regexp_string,
+ REG_ICASE)) {
+ fprintf(stderr,
+ "mymail: Syntax error in regexp \"%s\" for field \"%s\".\n",
+ search_regexp_string,
+ search_name);
+ exit(EXIT_FAILURE);
+ }
+
+ current_position_in_mail = 0;
+ already_written = 0;
+
+ while(fgets(raw_line, BUFFER_SIZE, db_file)) {
+ name = raw_line;
+ value = segment_next_field(raw_line);
+
+ if(strcmp("mail", name) == 0) {
+ char *position_in_file_string = value;
+ char *mail_filename = segment_next_field(value);
+ current_position_in_mail = atol(position_in_file_string);
+ strcpy(current_mail_filename, mail_filename);
+ remove_eof(current_mail_filename);
+ already_written = 0;
+ }
+
+ else if(!already_written) {
+ if(strcmp(search_name, name) == 0 && regexec(®exp, value, 0, 0, 0) == 0) {
+ FILE *mail_file;
+ mail_file = fopen(current_mail_filename, "r");
+ if(!mail_file) {
+ fprintf(stderr, "mymail: Can not open `%s'.\n", current_mail_filename);
+ exit(EXIT_FAILURE);
+ }
+ fseek(mail_file, current_position_in_mail, SEEK_SET);
+ if(fgets(raw_line, BUFFER_SIZE, mail_file)) {
+ printf("%s", raw_line);
+ while(fgets(raw_line, BUFFER_SIZE, mail_file) &&
+ strncmp(raw_line, "From ", 5)) {
+ printf("%s", raw_line);
+ }
+ }
+ fclose(mail_file);
+ already_written = 1;
+ }
+ }
+ }
+
+ regfree(®exp);
+}
+
+/*********************************************************************/
+
+void index_mbox(const char *input_filename,
+ int nb_fields_to_parse, struct parsable_field *fields_to_parse,
+ FILE *db_file) {
char raw_line[BUFFER_SIZE];
FILE *file;
- int in_header;
- unsigned int position_in_file;
+ int in_header, new_header;
+ unsigned long int position_in_file;
file = fopen(input_filename, "r");
if(!file) {
fprintf(stderr, "mymail: Can not open `%s'.\n", input_filename);
- exit(EXIT_FAILURE);
+ if(paranoid) { exit(EXIT_FAILURE); }
+ return;
}
in_header = 0;
+ new_header = 0;
position_in_file = 0;
if(strncmp(raw_line, "From ", 5) == 0) {
if(in_header) {
fprintf(stderr,
- "Got a 'From ' in the header in %s:%u.\n",
+ "Got a ^\"From \" in the header in %s:%lu.\n",
input_filename, position_in_file);
fprintf(stderr, "%s", raw_line);
- exit(EXIT_FAILURE);
+ if(paranoid) { exit(EXIT_FAILURE); }
}
in_header = 1;
+ new_header = 1;
} else if(strncmp(raw_line, "\n", 1) == 0) {
if(in_header) { in_header = 0; }
}
- /* if(in_header) { */
- /* printf("LINE.H %s", raw_line); */
- /* } else { */
- /* printf("LINE.B %s", raw_line); */
- /* } */
-
if(in_header) {
int f;
regmatch_t matches;
+ if(new_header) {
+ fprintf(db_file, "mail %lu %s\n", position_in_file, input_filename);
+ new_header = 0;
+ }
for(f = 0; f < nb_fields_to_parse; f++) {
if(regexec(&fields_to_parse[f].regexp, raw_line, 1, &matches, 0) == 0) {
- fprintf(fields_to_parse[f].db_file, "%s:%d %s",
- input_filename, position_in_file,
+ fprintf(db_file, "%s %s",
+ fields_to_parse[f].name,
raw_line + matches.rm_eo);
}
}
int ignore_entry(const char *name) {
return
- strcmp(name, ".") == 0 ||
- strcmp(name, "..") == 0 ||
+ /* strcmp(name, ".") == 0 || */
+ /* strcmp(name, "..") == 0 || */
(name[0] == '.' && name[1] != '/');
}
void process_entry(const char *dir_name,
- int nb_fields_to_parse, struct parsable_field *fields_to_parse) {
+ int nb_fields_to_parse, struct parsable_field *fields_to_parse,
+ FILE *db_file) {
DIR *dir;
struct dirent *dir_e;
struct stat sb;
dir_name,
strerror(errno));
exit(EXIT_FAILURE);
- } else {
- }
-
- if(S_ISLNK(sb.st_mode)) {
- return;
}
dir = opendir(dir_name);
while((dir_e = readdir(dir))) {
if(!ignore_entry(dir_e->d_name)) {
snprintf(subname, PATH_MAX, "%s/%s", dir_name, dir_e->d_name);
- process_entry(subname, nb_fields_to_parse, fields_to_parse);
+ process_entry(subname, nb_fields_to_parse, fields_to_parse, db_file);
}
}
closedir(dir);
} else {
- if(S_ISREG(sb.st_mode)) {
- /* printf("Processing regular file '%s'.\n", dir_name); */
- read_file(dir_name, nb_fields_to_parse, fields_to_parse);
- }
+ index_mbox(dir_name, nb_fields_to_parse, fields_to_parse, db_file);
}
}
/* For long options that have no equivalent short option, use a
non-character as a pseudo short option, starting with CHAR_MAX + 1. */
-enum
-{
+enum {
OPT_BASH_MODE = CHAR_MAX + 1
};
static struct option long_options[] = {
{ "help", no_argument, 0, 'h' },
{ "db-prefix", 1, 0, 'p' },
+ { "search-pattern", 1, 0, 's' },
+ { "index", 0, 0, 'i' },
{ 0, 0, 0, 0 }
};
static struct parsable_field fields_to_parse[] = {
{
"from",
- "^[Ff][Rr][Oo][Mm]: *",
- { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0
+ "^\\([Ff][Rr][Oo][Mm]:\\|From\\) *",
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
},
{
"dest",
"^\\([Tt][Oo]\\|[Cc][Cc]\\|[Bb][Cc][Cc]\\): *",
- { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, 0
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
},
};
char c;
int f;
+ paranoid = 0;
+ action_index = 0;
+ search_pattern = 0;
+
setlocale(LC_ALL, "");
- while ((c = getopt_long(argc, argv, "hp:",
+ while ((c = getopt_long(argc, argv, "hip:s:",
long_options, NULL)) != -1) {
switch(c) {
show_help = 1;
break;
+ case 'i':
+ action_index = 1;
+ break;
+
case 'p':
- db_filename_prefix = strdup(optarg);
+ db_filename = strdup(optarg);
+ break;
+
+ case 's':
+ if(search_pattern) {
+ fprintf(stderr, "mymail: Search pattern already defined.\n");
+ exit(EXIT_FAILURE);
+ }
+ search_pattern = strdup(optarg);
break;
default:
}
}
- if(!db_filename_prefix) {
- db_filename_prefix = strdup("/tmp/mymail_");
+ if(!db_filename) {
+ db_filename = strdup("/tmp/mymail");
}
if(error) {
exit(EXIT_SUCCESS);
}
- for(f = 0; f < nb_fields_to_parse; f++) {
- char db_filename[BUFFER_SIZE];
- sprintf(db_filename, "%s%s", db_filename_prefix, fields_to_parse[f].name);
- fields_to_parse[f].db_file = fopen(db_filename, "w");
- if(!fields_to_parse[f].db_file) {
+ if(action_index) {
+ FILE *db_file = fopen(db_filename, "w");
+ if(!db_file) {
fprintf(stderr,
"mymail: Can not open \"%s\" for writing: %s\n",
db_filename,
exit(EXIT_FAILURE);
}
- printf("Initialized %s.\n", db_filename);
+ for(f = 0; f < nb_fields_to_parse; f++) {
+ if(regcomp(&fields_to_parse[f].regexp,
+ fields_to_parse[f].regexp_string,
+ REG_ICASE)) {
+ fprintf(stderr,
+ "mymail: Syntax error in regexp \"%s\" for field \"%s\".\n",
+ fields_to_parse[f].regexp_string,
+ fields_to_parse[f].name);
+ exit(EXIT_FAILURE);
+ }
+ }
- if(regcomp(&fields_to_parse[f].regexp,
- fields_to_parse[f].regexp_string,
- REG_ICASE)) {
- fprintf(stderr,
- "mymail: Syntax error in regexp \"%s\" for field \"%s\".\n",
- fields_to_parse[f].regexp_string,
- fields_to_parse[f].name);
- exit(EXIT_FAILURE);
+ while(optind < argc) {
+ process_entry(argv[optind],
+ nb_fields_to_parse, fields_to_parse, db_file);
+ optind++;
}
- }
- while(optind < argc) {
- process_entry(argv[optind],
- nb_fields_to_parse, fields_to_parse);
- optind++;
+ fclose(db_file);
+
+ for(f = 0; f < nb_fields_to_parse; f++) {
+ regfree(&fields_to_parse[f].regexp);
+ }
}
- for(f = 0; f < nb_fields_to_parse; f++) {
- fclose(fields_to_parse[f].db_file);
- regfree(&fields_to_parse[f].regexp);
+ else {
+ if(search_pattern) {
+ FILE *db_file;
+ char *search_name;
+ char *search_regexp_string;
+ search_name = search_pattern;
+ search_regexp_string = segment_next_field(search_pattern);
+ if(!*search_regexp_string) {
+ fprintf(stderr,
+ "Syntax error in the search pattern.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ /* printf("Starting search in %s for field \"%s\" matching \"%s\".\n", */
+ /* db_filename, */
+ /* search_name, */
+ /* search_regexp_string); */
+
+ db_file = fopen(db_filename, "r");
+
+ if(!db_file) {
+ fprintf(stderr,
+ "mymail: Can not open \"%s\" for reading: %s\n",
+ db_filename,
+ strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+
+ search_in_db(search_name, search_regexp_string, db_file);
+
+ fclose(db_file);
+ free(search_pattern);
+ }
}
+ free(db_filename);
+
exit(EXIT_SUCCESS);
}
projects / mymail.git / blobdiff