Added some missing fflush for the files we write to.
[mymail.git] / mymail.c
index 48f25fa..a8fa8c9 100644 (file)
--- a/mymail.c
+++ b/mymail.c
 #include <limits.h>
 #include <dirent.h>
 #include <regex.h>
+#include <time.h>
 
 #define MYMAIL_DB_MAGIC_TOKEN "mymail_index_file"
-#define VERSION "0.9"
+#define VERSION "0.9.1"
 
 #define MAX_NB_SEARCH_CONDITIONS 10
 
@@ -55,31 +56,39 @@ char *db_filename;
 char *db_filename_regexp_string;
 char *db_root_path;
 char *db_filename_list;
+char output_filename[PATH_MAX + 1];
 
 int paranoid;
 int action_index;
+int quiet;
+
+time_t being_today;
 
 /********************************************************************/
 
 enum {
   ID_MAIL = 0,
+  ID_LEADING_LINE,
   ID_FROM,
   ID_TO,
   ID_SUBJECT,
   ID_DATE,
   ID_PARTICIPANT,
   ID_BODY,
+  ID_INTERVAL,
   MAX_ID
 };
 
 static char *field_names[] = {
   "mail",
+  "lead",
   "from",
   "to",
   "subject",
   "date",
   "part",
-  "body"
+  "body",
+  "interval"
 };
 
 /********************************************************************/
@@ -88,6 +97,7 @@ struct search_condition {
   int field_id;
   int negation;
   regex_t regexp;
+  time_t interval_start, interval_stop;
 };
 
 /********************************************************************/
@@ -99,9 +109,15 @@ struct parsable_field {
 };
 
 static struct parsable_field fields_to_parse[] = {
+  {
+    ID_LEADING_LINE,
+    "^From ",
+    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
+  },
+
   {
     ID_FROM,
-    "^\\(From \\|[Ff][Rr][Oo][Mm]:\\|[R][r][E][e][P][p][L][l][Y][y]-[T][t][O][o]:\\)",
+    "^\\([Ff][Rr][Oo][Mm]:\\|[Rr][Ee][Pp][Ll][Yy]-[Tt][Oo]:\\|[Ss][Ee][Nn][Dd][Ee][Rr]:\\)",
     { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
   },
 
@@ -173,6 +189,8 @@ void print_usage(FILE *out) {
   fprintf(out, "         show this help\n");
   fprintf(out, " -v, --version\n");
   fprintf(out, "         print the version number\n");
+  fprintf(out, " -q, --quiet\n");
+  fprintf(out, "         do not print information during search\n");
   fprintf(out, " -p <db filename pattern>, --db-pattern <db filename pattern>\n");
   fprintf(out, "         set the db filename pattern for recursive search\n");
   fprintf(out, " -r <db root path>, --db-root <db root path>\n");
@@ -185,6 +203,8 @@ void print_usage(FILE *out) {
   fprintf(out, "         set the db filename for indexing\n");
   fprintf(out, " -i, --index\n");
   fprintf(out, "         index mails\n");
+  fprintf(out, " -o <output filename>, --output <output filename>\n");
+  fprintf(out, "         set the result file, use stdout if unset\n");
 }
 
 /*********************************************************************/
@@ -198,16 +218,50 @@ int ignore_entry(const char *name) {
 
 int mbox_line_match_search(struct search_condition *condition,
                            int mbox_id, char *mbox_value) {
-  return
-    (condition->field_id == mbox_id ||
-     (condition->field_id == ID_PARTICIPANT && (mbox_id == ID_FROM || mbox_id == ID_TO)))
-    &&
-    regexec(&condition->regexp, mbox_value, 0, 0, 0) == 0;
+
+  if(condition->field_id == ID_INTERVAL) {
+    if(mbox_id == ID_LEADING_LINE) {
+      char *c;
+      time_t t;
+      struct tm tm;
+
+      c = mbox_value;
+      while(*c && *c != ' ') c++; while(*c && *c == ' ') c++;
+      strptime(c, "%a %b %e %k:%M:%S %Y", &tm);
+      t = mktime(&tm);
+
+      return (t >= condition->interval_start &&
+              (condition->interval_stop == 0 ||
+               t <= condition->interval_stop));
+    } else {
+      return 0;
+    }
+  } else {
+    return
+      (
+
+       (condition->field_id == mbox_id)
+
+       ||
+
+       (condition->field_id == ID_PARTICIPANT && (mbox_id == ID_LEADING_LINE ||
+                                                  mbox_id == ID_FROM ||
+                                                  mbox_id == ID_TO))
+       ||
+
+       (condition->field_id == ID_FROM && mbox_id == ID_LEADING_LINE)
+
+       )
+      &&
+      regexec(&condition->regexp, mbox_value, 0, 0, 0) == 0;
+  }
 }
 
-void search_in_db(int nb_search_conditions,
+void search_in_db(FILE *db_file,
+                  int nb_search_conditions,
                   struct search_condition *search_conditions,
-                  FILE *db_file) {
+                  FILE *output_file) {
+
   int hits[MAX_NB_SEARCH_CONDITIONS];
   char raw_db_line[BUFFER_SIZE];
   char raw_mbox_line[BUFFER_SIZE];
@@ -231,6 +285,8 @@ void search_in_db(int nb_search_conditions,
     }
   }
 
+  strcpy(current_mail_filename, "");
+
   while(fgets(raw_db_line, BUFFER_SIZE, db_file)) {
     mbox_name = raw_db_line;
     mbox_value = segment_next_field(raw_db_line);
@@ -239,84 +295,92 @@ void search_in_db(int nb_search_conditions,
       char *position_in_file_string;
       char *mail_filename;
 
-      /* We first check all conditions but the body ones */
+      if(current_mail_filename[0]) {
 
-      for(n = 0; n < nb_search_conditions &&
-            ((search_conditions[n].field_id == ID_BODY) ||
-             xor(hits[n], search_conditions[n].negation)); n++);
+        /* We first check all conditions but the body ones */
 
-      if(n == nb_search_conditions) {
+        for(n = 0; n < nb_search_conditions &&
+              ((search_conditions[n].field_id == ID_BODY) ||
+               xor(hits[n], search_conditions[n].negation)); n++);
 
-        /* all conditions but the body ones are fine, check the body
-           ones */
+        if(n == nb_search_conditions) {
 
-        nb_fulfilled_body_conditions = 0;
+          /* all conditions but the body ones are fine, check the body
+             ones */
 
-        if(nb_body_conditions > 0) {
-          FILE *mail_file;
-          int header;
+          nb_fulfilled_body_conditions = 0;
 
-          header = 1;
-          mail_file = fopen(current_mail_filename, "r");
+          if(nb_body_conditions > 0) {
+            FILE *mail_file;
+            int header;
 
-          if(!mail_file) {
-            fprintf(stderr, "mymail: Cannot open mbox '%s'.\n", current_mail_filename);
-            exit(EXIT_FAILURE);
-          }
+            header = 1;
+            mail_file = fopen(current_mail_filename, "r");
+
+            if(!mail_file) {
+              fprintf(stderr,
+                      "mymail: Cannot open mbox '%s' for body scan.\n",
+                      current_mail_filename);
+              exit(EXIT_FAILURE);
+            }
 
-          fseek(mail_file, current_position_in_mail, SEEK_SET);
+            fseek(mail_file, current_position_in_mail, SEEK_SET);
 
-          if(fgets(raw_mbox_line, BUFFER_SIZE, mail_file)) {
-            while(nb_fulfilled_body_conditions < nb_body_conditions) {
-              last_mbox_line_was_empty = (raw_mbox_line[0] == '\n');
+            if(fgets(raw_mbox_line, BUFFER_SIZE, mail_file)) {
+              while(nb_fulfilled_body_conditions < nb_body_conditions) {
+                last_mbox_line_was_empty = (raw_mbox_line[0] == '\n');
 
-              if(last_mbox_line_was_empty) { header = 0; }
+                if(last_mbox_line_was_empty) { header = 0; }
 
-              if(!header) {
-                for(n = 0; n < nb_search_conditions; n++) {
-                  if(search_conditions[n].field_id == ID_BODY && !hits[n]) {
-                    hits[n] =
-                      (regexec(&search_conditions[n].regexp, raw_mbox_line, 0, 0, 0) == 0);
-                    if(hits[n]) {
-                      fprintf(stderr, "** %d %s", header, raw_mbox_line);
-                      nb_fulfilled_body_conditions++;
+                if(!header) {
+                  for(n = 0; n < nb_search_conditions; n++) {
+                    if(search_conditions[n].field_id == ID_BODY && !hits[n]) {
+                      hits[n] =
+                        (regexec(&search_conditions[n].regexp, raw_mbox_line, 0, 0, 0) == 0);
+                      if(hits[n]) {
+                        nb_fulfilled_body_conditions++;
+                      }
                     }
                   }
                 }
-              }
 
-              if(!fgets(raw_mbox_line, BUFFER_SIZE, mail_file) ||
-                 (last_mbox_line_was_empty && strncmp(raw_mbox_line, "From ", 5) == 0)) break;
+                if(!fgets(raw_mbox_line, BUFFER_SIZE, mail_file) ||
+                   (last_mbox_line_was_empty && strncmp(raw_mbox_line, "From ", 5) == 0))
+                  break;
+              }
             }
-          }
-
-          fclose(mail_file);
-        }
 
-        if(nb_body_conditions == nb_fulfilled_body_conditions) {
-          FILE *mail_file;
+            fclose(mail_file);
+          }
 
-          mail_file = fopen(current_mail_filename, "r");
+          if(nb_body_conditions == nb_fulfilled_body_conditions) {
+            FILE *mail_file;
 
-          if(!mail_file) {
-            fprintf(stderr, "mymail: Cannot open mbox '%s'.\n", current_mail_filename);
-            exit(EXIT_FAILURE);
-          }
+            mail_file = fopen(current_mail_filename, "r");
 
-          fseek(mail_file, current_position_in_mail, SEEK_SET);
+            if(!mail_file) {
+              fprintf(stderr,
+                      "mymail: Cannot open mbox '%s' for mail extraction.\n",
+                      current_mail_filename);
+              exit(EXIT_FAILURE);
+            }
 
-          if(fgets(raw_mbox_line, BUFFER_SIZE, mail_file)) {
-            last_mbox_line_was_empty = 1;
-            printf("%s", raw_mbox_line);
-            while(1) {
-              if(!fgets(raw_mbox_line, BUFFER_SIZE, mail_file) ||
-                 (last_mbox_line_was_empty && strncmp(raw_mbox_line, "From ", 5) == 0)) break;
-              last_mbox_line_was_empty = (raw_mbox_line[0] == '\n');
-              printf("%s", raw_mbox_line);
+            fseek(mail_file, current_position_in_mail, SEEK_SET);
+
+            if(fgets(raw_mbox_line, BUFFER_SIZE, mail_file)) {
+              last_mbox_line_was_empty = 1;
+              fprintf(output_file, "%s", raw_mbox_line);
+              while(1) {
+                if(!fgets(raw_mbox_line, BUFFER_SIZE, mail_file) ||
+                   (last_mbox_line_was_empty && strncmp(raw_mbox_line, "From ", 5) == 0))
+                  break;
+                last_mbox_line_was_empty = (raw_mbox_line[0] == '\n');
+                fprintf(output_file, "%s", raw_mbox_line);
+              }
             }
-          }
 
-          fclose(mail_file);
+            fclose(mail_file);
+          }
         }
       }
 
@@ -347,7 +411,9 @@ void search_in_db(int nb_search_conditions,
 }
 
 void recursive_search_in_db(const char *entry_name, regex_t *db_filename_regexp,
-                            int nb_search_conditions, struct search_condition *search_conditions) {
+                            int nb_search_conditions,
+                            struct search_condition *search_conditions,
+                            FILE *output_file) {
   DIR *dir;
   struct dirent *dir_e;
   struct stat sb;
@@ -369,7 +435,8 @@ void recursive_search_in_db(const char *entry_name, regex_t *db_filename_regexp,
       if(!ignore_entry(dir_e->d_name)) {
         snprintf(subname, PATH_MAX, "%s/%s", entry_name, dir_e->d_name);
         recursive_search_in_db(subname, db_filename_regexp,
-                               nb_search_conditions, search_conditions);
+                               nb_search_conditions, search_conditions,
+                               output_file);
       }
     }
     closedir(dir);
@@ -382,6 +449,11 @@ void recursive_search_in_db(const char *entry_name, regex_t *db_filename_regexp,
     if(regexec(db_filename_regexp, filename, 0, 0, 0) == 0) {
       FILE *db_file = fopen(entry_name, "r");
 
+      if(!quiet) {
+        printf("Searching in '%s' ... ", entry_name);
+        fflush(stdout);
+      }
+
       if(!db_file) {
         fprintf(stderr,
                 "mymail: Cannot open \"%s\" for reading: %s\n",
@@ -404,9 +476,14 @@ void recursive_search_in_db(const char *entry_name, regex_t *db_filename_regexp,
         exit(EXIT_FAILURE);
       }
 
-      search_in_db(nb_search_conditions, search_conditions, db_file);
+      search_in_db(db_file, nb_search_conditions, search_conditions, output_file);
 
       fclose(db_file);
+
+      if(!quiet) {
+        printf("done.\n");
+        fflush(stdout);
+      }
     }
   }
 }
@@ -558,12 +635,14 @@ enum {
 static struct option long_options[] = {
   { "help", no_argument, 0, 'h' },
   { "version", no_argument, 0, 'v' },
+  { "quiet", no_argument, 0, 'q' },
   { "db-file", 1, 0, 'd' },
   { "db-pattern", 1, 0, 'p' },
   { "db-root", 1, 0, 'r' },
   { "db-list", 1, 0, 'l' },
   { "search", 1, 0, 's' },
   { "index", 0, 0, 'i' },
+  { "output", 1, 0, 'o' },
   { 0, 0, 0, 0 }
 };
 
@@ -576,22 +655,20 @@ int main(int argc, char **argv) {
   int f;
   int nb_search_conditions;
   char *search_condition_strings[MAX_NB_SEARCH_CONDITIONS];
-
-  /* for(f = 0; f < argc; f++) { */
-  /* printf("arg %d \"%s\"\n", f, argv[f]); */
-  /* } */
+  FILE *output_file;
 
   paranoid = 0;
   action_index = 0;
   db_filename = 0;
   db_root_path = 0;
   db_filename_list = 0;
+  quiet = 0;
 
   setlocale(LC_ALL, "");
 
   nb_search_conditions = 0;
 
-  while ((c = getopt_long(argc, argv, "hvip:s:d:r:l:",
+  while ((c = getopt_long(argc, argv, "hvqip:s:d:r:l:o:",
                           long_options, NULL)) != -1) {
 
     switch(c) {
@@ -604,6 +681,10 @@ int main(int argc, char **argv) {
       print_version(stdout);
       break;
 
+    case 'q':
+      quiet = 1;
+      break;
+
     case 'i':
       action_index = 1;
       break;
@@ -616,6 +697,10 @@ int main(int argc, char **argv) {
       db_filename_regexp_string = strdup(optarg);
       break;
 
+    case 'o':
+      strncpy(output_filename, optarg, PATH_MAX);
+      break;
+
     case 'r':
       db_root_path = strdup(optarg);
       break;
@@ -674,6 +759,21 @@ int main(int argc, char **argv) {
     }
   }
 
+  if(output_filename[0]) {
+    output_file = fopen(output_filename, "w");
+
+    if(!output_file) {
+      fprintf(stderr,
+              "mymail: Cannot open result file \"%s\" for writing: %s\n",
+              output_filename,
+              strerror(errno));
+      exit(EXIT_FAILURE);
+    }
+  } else {
+    output_file = stdout;
+    quiet = 1;
+  }
+
   if(error) {
     print_usage(stderr);
     exit(EXIT_FAILURE);
@@ -718,6 +818,7 @@ int main(int argc, char **argv) {
       optind++;
     }
 
+    fflush(db_file);
     fclose(db_file);
 
     for(f = 0; f < nb_fields_to_parse; f++) {
@@ -734,7 +835,6 @@ int main(int argc, char **argv) {
 
       for(n = 0; n < nb_search_conditions; n++) {
         search_field = search_condition_strings[n];
-        search_regexp_string = segment_next_field(search_condition_strings[n]);
 
         if(search_field[0] == '!') {
           search_field++;
@@ -743,28 +843,45 @@ int main(int argc, char **argv) {
           search_conditions[n].negation = 0;
         }
 
-        search_conditions[n].field_id = -1;
-        for(m = 0; (m < MAX_ID) && search_conditions[n].field_id == -1; m++) {
-          if(strncmp(field_names[m], search_field, strlen(search_field)) == 0) {
-            search_conditions[n].field_id = m;
-          }
+        if(strcmp(search_field, "today") == 0) {
+          search_conditions[n].field_id = ID_INTERVAL;
+          search_conditions[n].interval_start = time(0) - 3600 * 24;
+          search_conditions[n].interval_stop = 0;
         }
 
-        if(search_conditions[n].field_id == -1) {
-          fprintf(stderr,
-                  "mymail: Syntax error in field name \"%s\".\n",
-                  search_field);
-          exit(EXIT_FAILURE);
+        else if(strcmp(search_field, "yesterday") == 0) {
+          search_conditions[n].field_id = ID_INTERVAL;
+          search_conditions[n].interval_start = time(0) - 2 * 3600 * 24;
+          search_conditions[n].interval_stop = time(0) - 3600 * 24;
         }
 
-        if(regcomp(&search_conditions[n].regexp,
-                   search_regexp_string,
-                   REG_ICASE)) {
-          fprintf(stderr,
-                  "mymail: Syntax error in regexp \"%s\" for field \"%s\".\n",
-                  search_regexp_string,
-                  field_names[search_conditions[n].field_id]);
-          exit(EXIT_FAILURE);
+        else {
+          search_regexp_string = segment_next_field(search_condition_strings[n]);
+
+          search_conditions[n].field_id = -1;
+
+          for(m = 0; (m < MAX_ID) && search_conditions[n].field_id == -1; m++) {
+            if(strncmp(field_names[m], search_field, strlen(search_field)) == 0) {
+              search_conditions[n].field_id = m;
+            }
+          }
+
+          if(search_conditions[n].field_id == -1) {
+            fprintf(stderr,
+                    "mymail: Syntax error in field name \"%s\".\n",
+                    search_field);
+            exit(EXIT_FAILURE);
+          }
+
+          if(regcomp(&search_conditions[n].regexp,
+                     search_regexp_string,
+                     REG_ICASE)) {
+            fprintf(stderr,
+                    "mymail: Syntax error in regexp \"%s\" for field \"%s\".\n",
+                    search_regexp_string,
+                    field_names[search_conditions[n].field_id]);
+            exit(EXIT_FAILURE);
+          }
         }
       }
 
@@ -782,7 +899,8 @@ int main(int argc, char **argv) {
         }
 
         recursive_search_in_db(db_root_path, &db_filename_regexp,
-                               nb_search_conditions, search_conditions);
+                               nb_search_conditions, search_conditions,
+                               output_file);
 
         regfree(&db_filename_regexp);
       }
@@ -813,7 +931,7 @@ int main(int argc, char **argv) {
               exit(EXIT_FAILURE);
             }
 
-            search_in_db(nb_search_conditions, search_conditions, db_file);
+            search_in_db(db_file, nb_search_conditions, search_conditions, output_file);
 
             fclose(db_file);
           }
@@ -833,7 +951,7 @@ int main(int argc, char **argv) {
           exit(EXIT_FAILURE);
         }
 
-        search_in_db(nb_search_conditions, search_conditions, db_file);
+        search_in_db(db_file, nb_search_conditions, search_conditions, output_file);
 
         fclose(db_file);
         optind++;
@@ -846,6 +964,11 @@ int main(int argc, char **argv) {
     }
   }
 
+  if(output_file != stdout) {
+    fflush(output_file);
+    fclose(output_file);
+  }
+
   free(db_filename);
   free(db_filename_regexp_string);
   free(db_root_path);