Cosmetics.

[mymail.git] / mymail.c

diff --git a/mymail.c b/mymail.c
index 6388365..c21be1c 100644 (file)
--- a/mymail.c
+++ b/mymail.c
@@ -19,6 +19,18 @@
  *
  */
 
+/*
+
+  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.
+
+*/
+
 #define _GNU_SOURCE
 
 #include <stdio.h>
@@ -45,6 +57,7 @@ struct parsable_field {
 char *db_filename;
 char *search_pattern;
 
+int paranoid;
 int action_index;
 
 char *segment_next_field(char *current) {
@@ -89,7 +102,7 @@ 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;
+  unsigned long int current_position_in_mail;
   char *name, *value;
   regex_t regexp;
   int already_written;
@@ -111,20 +124,18 @@ void search_in_db(const char *search_name, const char *search_regexp_string,
     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);
+      current_position_in_mail = atol(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) {
+    }
+
+    else if(!already_written) {
       if(strcmp(search_name, name) == 0 && regexec(&regexp, 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);
@@ -143,24 +154,26 @@ void search_in_db(const char *search_name, const char *search_regexp_string,
       }
     }
   }
-}
 
+  regfree(&regexp);
+}
 
 /*********************************************************************/
 
-void read_file(const char *input_filename,
-               int nb_fields_to_parse, struct parsable_field *fields_to_parse,
-               FILE *db_file) {
+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, new_header;
-  unsigned int position_in_file;
+  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;
@@ -172,10 +185,10 @@ void read_file(const char *input_filename,
     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;
@@ -183,17 +196,11 @@ void read_file(const char *input_filename,
       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);
+        fprintf(db_file, "mail %lu %s\n", position_in_file, input_filename);
         new_header = 0;
       }
       for(f = 0; f < nb_fields_to_parse; f++) {
@@ -213,8 +220,8 @@ void read_file(const char *input_filename,
 
 int ignore_entry(const char *name) {
   return
-    strcmp(name, ".") == 0 ||
-    strcmp(name, "..") == 0 ||
+    /* strcmp(name, ".") == 0 || */
+    /* strcmp(name, "..") == 0 || */
     (name[0] == '.' && name[1] != '/');
 }
 
@@ -232,11 +239,6 @@ void process_entry(const char *dir_name,
             dir_name,
             strerror(errno));
     exit(EXIT_FAILURE);
-  } else {
-  }
-
-  if(S_ISLNK(sb.st_mode)) {
-    return;
   }
 
   dir = opendir(dir_name);
@@ -251,10 +253,7 @@ void process_entry(const char *dir_name,
     }
     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);
-    }
+    index_mbox(dir_name, nb_fields_to_parse, fields_to_parse, db_file);
   }
 }
 
@@ -262,8 +261,7 @@ void process_entry(const char *dir_name,
 
 /* 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
 };
 
@@ -295,6 +293,7 @@ int main(int argc, char **argv) {
   char c;
   int f;
 
+  paranoid = 0;
   action_index = 0;
   search_pattern = 0;
 
@@ -319,8 +318,7 @@ int main(int argc, char **argv) {
 
     case 's':
       if(search_pattern) {
-        fprintf(stderr,
-                "mymail: Search pattern already defined.\n");
+        fprintf(stderr, "mymail: Search pattern already defined.\n");
         exit(EXIT_FAILURE);
       }
       search_pattern = strdup(optarg);
@@ -395,9 +393,9 @@ int main(int argc, char **argv) {
       }
 
       /* printf("Starting search in %s for field \"%s\" matching \"%s\".\n", */
-             /* db_filename, */
-             /* search_name, */
-             /* search_regexp_string); */
+      /* db_filename, */
+      /* search_name, */
+      /* search_regexp_string); */
 
       db_file = fopen(db_filename, "r");
 
@@ -416,5 +414,7 @@ int main(int argc, char **argv) {
     }
   }
 
+  free(db_filename);
+
   exit(EXIT_SUCCESS);
 }