From: Francois Fleuret <francois@fleuret.org>
Date: Sun, 27 Jan 2013 20:19:48 +0000 (+0100)
Subject: Starting to write the search.
X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=commitdiff_plain;h=5166266bf624c0a4d94d7751bb819c26cc1cc22d;p=mymail.git

Starting to write the search.
---

diff --git a/mymail.c b/mymail.c
index dc7c58c..25121a4 100644
--- a/mymail.c
+++ b/mymail.c
@@ -40,10 +40,12 @@ struct parsable_field {
   char *name;
   char *regexp_string;
   regex_t regexp;
-  FILE *db_file;
 };
 
-char *db_filename_prefix;
+char *db_filename;
+char *search_pattern;
+
+int action_index;
 
 /********************************************************************/
 
@@ -70,10 +72,11 @@ void usage(FILE *out) {
 }
 
 void read_file(const char *input_filename,
-               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) {
   char raw_line[BUFFER_SIZE];
   FILE *file;
-  int in_header;
+  int in_header, new_header;
   unsigned int position_in_file;
 
   file = fopen(input_filename, "r");
@@ -84,6 +87,7 @@ void read_file(const char *input_filename,
   }
 
   in_header = 0;
+  new_header = 0;
 
   position_in_file = 0;
 
@@ -97,23 +101,28 @@ void read_file(const char *input_filename,
         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); */
+    /* printf("LINE.H %s", raw_line); */
     /* } else { */
-      /* printf("LINE.B %s", raw_line); */
+    /* printf("LINE.B %s", raw_line); */
     /* } */
 
     if(in_header) {
       int f;
       regmatch_t matches;
+      if(new_header) {
+        fprintf(db_file, "mail %s:%d\n", input_filename, position_in_file);
+        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);
         }
       }
@@ -133,7 +142,8 @@ int ignore_entry(const char *name) {
 }
 
 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;
@@ -159,14 +169,14 @@ void process_entry(const char *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);
+      read_file(dir_name, nb_fields_to_parse, fields_to_parse, db_file);
     }
   }
 }
@@ -183,20 +193,22 @@ 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]: *",
-    { 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 }
   },
 };
 
@@ -206,9 +218,12 @@ int main(int argc, char **argv) {
   char c;
   int f;
 
+  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) {
@@ -217,8 +232,21 @@ int main(int argc, char **argv) {
       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:
@@ -227,8 +255,8 @@ int main(int argc, char **argv) {
     }
   }
 
-  if(!db_filename_prefix) {
-    db_filename_prefix = strdup("/tmp/mymail_");
+  if(!db_filename) {
+    db_filename = strdup("/tmp/mymail");
   }
 
   if(error) {
@@ -241,11 +269,9 @@ int main(int argc, char **argv) {
     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,
@@ -253,28 +279,51 @@ int main(int argc, char **argv) {
       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) {
+      char *search_name;
+      char *search_regexp;
+      search_name = search_pattern;
+      search_regexp = search_pattern;
+      while(*search_regexp && *search_regexp != ' ') search_regexp++;
+      *search_regexp = '\0'; search_regexp++;
+      while(*search_regexp && *search_regexp == ' ') search_regexp++;
+      if(!*search_regexp) {
+        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);
+      free(search_pattern);
+    }
   }
 
   exit(EXIT_SUCCESS);