X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=blobdiff_plain;f=mymail.c;h=6388365093510e913221db4b9e8fd5f8f7f9cef8;hb=319a695493cac88fc6b14541d30ae0107f38caf9;hp=241d6359e8504c605642bcd20da2697db5ddc5ec;hpb=335e2ce30616f0f2a59b2ad908261053d26f7aad;p=mymail.git diff --git a/mymail.c b/mymail.c index 241d635..6388365 100644 --- a/mymail.c +++ b/mymail.c @@ -19,33 +19,46 @@ * */ -/* - - To use it as a super-history-search for bash: - mymail --bash <(history) - -*/ - #define _GNU_SOURCE #include #include -#include #include #include -#include #include -#include -#include -#include #include #include #include +#include +#include -#define VERSION "1.1.7" +#define VERSION "0.1" #define BUFFER_SIZE 16384 +struct parsable_field { + char *name; + char *regexp_string; + regex_t regexp; +}; + +char *db_filename; +char *search_pattern; + +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'; +} + /********************************************************************/ /* malloc with error checking. */ @@ -63,7 +76,6 @@ void *safe_malloc(size_t n) { /*********************************************************************/ void usage(FILE *out) { - fprintf(out, "mymail version %s (%s)\n", VERSION, UNAME); fprintf(out, "Written by Francois Fleuret .\n"); fprintf(out, "\n"); @@ -71,13 +83,78 @@ void usage(FILE *out) { fprintf(out, "\n"); } -void read_file(const char *input_filename, - int nb_lines_max, int *nb_lines) { +/*********************************************************************/ + +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 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); + + /* printf("LINE [%s] %s", name, value); */ + + if(strcmp("mail", name) == 0) { + char *position_in_file_string = value; + char *mail_filename = segment_next_field(value); + current_position_in_mail = atoi(position_in_file_string); + strcpy(current_mail_filename, mail_filename); + remove_eof(current_mail_filename); + /* printf("READING [%s]\n", 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; + /* printf("%s:%u\n", current_mail_filename, current_position_in_mail); */ + 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; + } + } + } +} + +/*********************************************************************/ + +void read_file(const char *input_filename, + int nb_fields_to_parse, struct parsable_field *fields_to_parse, + FILE *db_file) { char raw_line[BUFFER_SIZE]; - char *s; FILE *file; - int l; + int in_header, new_header; + unsigned int position_in_file; file = fopen(input_filename, "r"); @@ -86,18 +163,101 @@ void read_file(const char *input_filename, exit(EXIT_FAILURE); } - while(*nb_lines < nb_lines_max && fgets(raw_line, BUFFER_SIZE, file)) { - l = strlen(raw_line); - fgets(raw_line + l, BUFFER_SIZE - l, file); - for(s = raw_line + strlen(raw_line) - 1; s > raw_line && *s == '\n'; s--) { - *s = '\0'; + in_header = 0; + new_header = 0; + + position_in_file = 0; + + while(fgets(raw_line, BUFFER_SIZE, file)) { + if(strncmp(raw_line, "From ", 5) == 0) { + if(in_header) { + fprintf(stderr, + "Got a 'From ' in the header in %s:%u.\n", + input_filename, position_in_file); + fprintf(stderr, "%s", raw_line); + 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 %u %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(db_file, "%s %s", + fields_to_parse[f].name, + raw_line + matches.rm_eo); + } + } } - /* store_line(hash_table, raw_line, nb_lines, lines); */ + + position_in_file += strlen(raw_line); } fclose(file); } +int ignore_entry(const char *name) { + return + 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, + FILE *db_file) { + DIR *dir; + struct dirent *dir_e; + struct stat sb; + char subname[PATH_MAX + 1]; + + if(lstat(dir_name, &sb) != 0) { + fprintf(stderr, + "mymail: Can not stat \"%s\": %s\n", + dir_name, + strerror(errno)); + exit(EXIT_FAILURE); + } else { + } + + if(S_ISLNK(sb.st_mode)) { + return; + } + + dir = opendir(dir_name); + + if(dir) { + printf("Processing directory '%s'.\n", 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, 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, db_file); + } + } +} + /*********************************************************************/ /* For long options that have no equivalent short option, use a @@ -109,16 +269,38 @@ enum 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]:\\|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 } + }, +}; + int main(int argc, char **argv) { int error = 0, show_help = 0; + const int nb_fields_to_parse = sizeof(fields_to_parse) / sizeof(struct parsable_field); char c; + int f; + + action_index = 0; + search_pattern = 0; setlocale(LC_ALL, ""); - while ((c = getopt_long(argc, argv, "o:s:x:vwmqf:ibzdeajyunt:r:l:c:-h", + while ((c = getopt_long(argc, argv, "hip:s:", long_options, NULL)) != -1) { switch(c) { @@ -127,12 +309,33 @@ int main(int argc, char **argv) { show_help = 1; break; + case 'i': + action_index = 1; + break; + + case 'p': + 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: error = 1; break; } } + if(!db_filename) { + db_filename = strdup("/tmp/mymail"); + } + if(error) { usage(stderr); exit(EXIT_FAILURE); @@ -143,5 +346,75 @@ int main(int argc, char **argv) { exit(EXIT_SUCCESS); } + 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, + strerror(errno)); + exit(EXIT_FAILURE); + } + + 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); + } + } + + while(optind < argc) { + process_entry(argv[optind], + nb_fields_to_parse, fields_to_parse, db_file); + optind++; + } + + fclose(db_file); + + for(f = 0; f < nb_fields_to_parse; f++) { + 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); + } + } + exit(EXIT_SUCCESS); }