]> git.deb.at Git - pkg/abook.git/blobdiff - options.c
new configuration system
[pkg/abook.git] / options.c
index ad0671161abf79e7da0f50fa23c3d1eb2b42c6ec..82aae49cef02ae9566945f4559608d54e061a2e4 100644 (file)
--- a/options.c
+++ b/options.c
  * by JH <jheinonen@users.sourceforge.net>
  *
  * Copyright (C) Jaakko Heinonen
+ *
  */
 
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <unistd.h>
-#include "abook_curses.h"
-#include "abook.h"
+#include <ctype.h>
+#include <assert.h>
 #include "options.h"
-#ifdef HAVE_CONFIG_H
-#      include "config.h"
+#include "abook.h"
+#include "misc.h"
+
+#ifndef FALSE
+#      define FALSE    0
+#endif
+#ifndef TRUE
+#      define TRUE     1
 #endif
 
-struct conff_node *abook_config;
+#define UL     (unsigned long)
 
-static int     rcfile_exist();
-static void    default_options();
+/*
+ * option types
+ */
 
-extern char *rcfile;
+enum opt_type {
+       OT_BOOL,
+       OT_STR,
+       OT_INT
+};
 
-static char *
-abook_opt_conff_get_val(char *key)
+struct option {
+       char *option;
+       enum opt_type type;
+       unsigned int data;
+       unsigned long init;
+};
+
+static struct option abook_vars[] = {
+       { "autosave", OT_BOOL, BOOL_AUTOSAVE, TRUE },
+
+       { "show_all_emails", OT_BOOL, BOOL_SHOW_ALL_EMAILS, TRUE },
+       { "emailpos", OT_INT, INT_EMAILPOS, 25 },
+       { "extra_column", OT_STR, STR_EXTRA_COLUMN, UL "phone" },
+       { "extra_alternative", OT_STR, STR_EXTRA_ALTERNATIVE, UL "-1" },
+       { "extrapos", OT_INT, INT_EXTRAPOS, 65 },
+
+       { "mutt_command", OT_STR, STR_MUTT_COMMAND, UL "mutt" },
+       { "mutt_return_all_emails", OT_BOOL, BOOL_MUTT_RETURN_ALL_EMAILS,
+               TRUE },
+       
+       { "print_command", OT_STR, STR_PRINT_COMMAND, UL "lpr" },
+
+       { "www_command", OT_STR, STR_WWW_COMMAND, UL "lynx" },
+       
+       { "address_style", OT_STR, STR_ADDRESS_STYLE, UL "eu" },
+
+       { "use_ascii_only", OT_BOOL, BOOL_USE_ASCII_ONLY, FALSE },
+
+       { NULL }
+};
+
+static unsigned char bool_opts[BOOL_MAX];
+static int int_opts[INT_MAX];
+static char *str_opts[STR_MAX];
+
+static void
+set_int(enum int_opts opt, int value)
 {
-       int tried;
-       char *value = NULL;
+       assert(opt >= 0 && opt < INT_MAX);
 
+       int_opts[opt] = value;
+}
 
-       for(tried = 0; tried < 2; ) {
-               if( ( value = conff_get_value(abook_config, key) )
-                               == 0 ) {
-                       tried ++;
-                       default_options(); /* try with defaults */
-               } else
-                       return value;
-       }
-       return NULL;
+static void
+set_bool(enum bool_opts opt, bool value)
+{
+       assert(opt >= 0 && opt < BOOL_MAX);
+
+       bool_opts[opt] = value;
+}
+
+static void
+set_str(enum str_opts opt, char *value)
+{
+       assert(opt >= 0 && opt < STR_MAX);
+
+       if(str_opts[opt])
+               free(str_opts[opt]);
+
+       str_opts[opt] = strdup(value);
 }
 
 int
-options_get_int(char *key)
+opt_get_int(enum int_opts opt)
 {
-       char *value;
-       int ret;
-       
-       if( ( value = abook_opt_conff_get_val(key) )
-                       == NULL)
-               return 1;
+       assert(opt >= 0 && opt < INT_MAX);
 
-       if( !strcasecmp(value, "true") )
-               ret = 1;
-       else
-       if( !strcasecmp(value, "false") )
-               ret = 0;
-       else
-               ret = safe_atoi(value);
-       
-       return ret;
+       return int_opts[opt];
 }
-       
+
+bool
+opt_get_bool(enum bool_opts opt)
+{
+       assert(opt >= 0 && opt < STR_MAX);
+
+       return bool_opts[opt];
+}
+
 char *
-options_get_str(char *key)
+opt_get_str(enum str_opts opt)
 {
-       return abook_opt_conff_get_val(key); 
+       assert(opt >= 0 && opt < STR_MAX);
+
+       return str_opts[opt];
 }
-               
+
+static void
+restore_default(struct option *p)
+{
+       switch(p -> type) {
+               case OT_BOOL:
+                       set_bool(p -> data, (bool)p -> init);
+                       break;
+               case OT_INT:
+                       set_int(p -> data, (int)p -> init);
+                       break;
+               case OT_STR:
+                       if(p -> init)
+                               set_str(p -> data, (char *) p -> init);
+                       break;
+               default:
+                       assert(0);
+       }
+}
+
 void
-init_options()
+init_opts()
 {
-       abook_config = NULL;
+       int i;
 
-       if( rcfile_exist() )
-               load_options();
-       else
-               default_options();
+       for(i = 0; abook_vars[i].option; i++)
+               restore_default(&abook_vars[i]);
 }
 
+void
+free_opts()
+{
+       int i;
 
-#if 1
-extern bool alternative_rcfile;
-#endif
+       /*
+        * only strings need to be freed
+        */
+       for(i = 0; i < STR_MAX; i++) {
+               free(str_opts[i]);
+               str_opts[i] = NULL;
+       }
+}
 
-void
-close_config()
+/*
+ * file parsing
+ */
+
+static void
+opt_line_remove_comments(char *p)
 {
-#if 1
-       if(!alternative_rcfile)
-               save_options();
-#endif
+       bool in_quote = FALSE;
+       bool escape = FALSE;
+
+       assert(p != NULL);
+
+       for(; *p; p++) {
+               switch(*p) {
+                       case '\"':
+                               if(!escape) {
+                                       in_quote = !in_quote;
+                                       escape = FALSE;
+                               }
+                               break;
+                       case '\\':
+                               escape = TRUE;
+                               break;
+                       case '#':
+                               if(!in_quote) {
+                                       *p = 0;
+                                       return;
+                               }
+                       default:
+                               escape = FALSE;
+               }
+       }
+}
+
+static char *
+get_token_start(char *p)
+{
+       assert(p);
+       
+       for(; ISSPACE(*p); p++);
 
-       conff_free_nodes(abook_config);
+       return p;
 }
 
-static int
-rcfile_exist()
+static char *
+get_token_end(char *p)
 {
-       return ( (0 == access(SYSWIDE_RCFILE, F_OK)) ||
-                       (0 == access(rcfile, F_OK)) );
+       assert(p);
+
+       for(p = get_token_start(p); *p; p++) {
+               if(ISSPACE(*p)) {
+                       break;
+               }
+       }
+
+       return p;
 }
 
-void
-load_options()
+static char *
+opt_set_set_option(char *var, char *p, struct option *opt)
 {
-       int ret;
+       int len;
        
-        if( (ret = conff_load_file(&abook_config, rcfile,
-                               REPLACE_KEY)) > 0) {
-               fprintf(stderr, "%s: parse error at line %d\n", rcfile, ret);
-               exit(1);
+       strtrim(p);
+
+       len = strlen(p);
+
+       if(p[len - 1] == '\"' && *p == '\"') {
+               if(len < 3)
+                       return "invalid value";
+               p[len - 1] = 0;
+               p++;
        }
 
-       if( (ret = conff_load_file(&abook_config, SYSWIDE_RCFILE,
-                                       DONT_REPLACE_KEY )) > 0) {
-               fprintf(stderr, "%s: parse error at line %d\n",
-                               SYSWIDE_RCFILE, ret);
-               exit(1);
+       switch(opt -> type) {
+               case OT_STR:
+                       set_str(opt -> data, p);
+                       break;
+               case OT_INT:
+                       set_int(opt -> data, safe_atoi(p));
+                       break;
+               case OT_BOOL:
+                       if(!strcasecmp(p, "true") && !strcasecmp(p, "on"))
+                               set_bool(opt -> data, TRUE);
+                       else if(!strcasecmp(p, "false") &&
+                                       !strcasecmp(p, "off"))
+                               set_bool(opt -> data, FALSE);
+                       else
+                               return "invalid value";
+                       break;
        }
+       
+       return NULL;
 }
 
-#if 1
-void
-save_options()
+static char *
+opt_parse_set(char *p)
 {
-       if( rcfile_exist() ) /* don't overwrite existing config */
-               return;
+       char *var;
+       int i;
 
-       conff_save_file(abook_config, rcfile);
+       var = get_token_start(p);
+       if((p = strchr(var, '=')))
+               *p++ = 0;
+       else
+               return "invalid value assignment";
+       
+       strtrim(var);
+
+       for(i = 0;abook_vars[i].option; i++)
+               if(!strcmp(abook_vars[i].option, var))
+                       return opt_set_set_option(var, p, &abook_vars[i]);
+       
+       return "unknown option";
 }
-#endif
 
-static void
-options_add_key(char *key, char *value)
+
+static struct {
+       char *token;
+       char * (*func) (char *line);
+} opt_parsers[] = {
+       { "set", opt_parse_set },
+       { NULL }
+};
+
+static bool
+opt_parse_line(char *line, int n, char *fn)
 {
-       const int flags = DONT_REPLACE_KEY;
+       int i;
+       char *p;
+       char *err = NULL;
+       
+       assert(line && fn);
+
+       line = get_token_start(line);
+       p = get_token_end(line);
+       *p++ = 0;
+
+       if(!*line)
+               return FALSE;
 
-       conff_add_key(&abook_config, key, value, flags);
+       strtrim(line);
+       strtrim(p);
+
+       for(i = 0; opt_parsers[i].token; i++)
+               if(!strcmp(opt_parsers[i].token, line)) {
+                       if(!(err = opt_parsers[i].func(p)))
+                               return FALSE;
+                       break;
+               }
+       
+       fprintf(stderr, "%s: parse error at line %d: ", fn, n);
+       if(err)
+               fprintf(stderr, "%s\n", err);
+       else
+               fprintf(stderr, "unknown token %s\n", line);
+
+       return TRUE;
 }
 
-static void
-default_options()
+int
+load_opts(char *filename)
 {
-       options_add_key("autosave", "true");
-
-       options_add_key("show_all_emails", "true");
-       options_add_key("emailpos", "25");
-       options_add_key("extra_column", "phone");
-       options_add_key("extra_alternative", "-1");
-       options_add_key("extrapos", "65");
+       FILE *in;
+       char *line = NULL;
+       int n;
+       bool err = FALSE;
+       
+       if((in = fopen(filename, "r")) == NULL)
+               return -1;
 
-       options_add_key("mutt_command", "mutt");
-       options_add_key("mutt_return_all_emails", "true");
+       
+       for(n = 1;!feof(in); n++) {
+               line = getaline(in);
 
-       options_add_key("print_command", "lpr");
+               if(feof(in))
+                       break;
 
-       options_add_key("filesel_sort", "false");
+               if(line && *line) {
+                       opt_line_remove_comments(line);
+                       if(*line)
+                               err = opt_parse_line(line, n, filename);
+               }
 
-       options_add_key("www_command", "lynx");
+               my_free(line);
+       }
 
-       options_add_key("address_style", "eu");
+       free(line);
 
-       options_add_key("use_ascii_only", "false");
+       if(err) {
+               printf("Press any key to continue...\n");
+               fgetc(stdin);
+       }
+       
+       return err;
 }
+