Dogcows Code - chaz/openbox/blob - obt/ddfile.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    obt/ddfile.c for the Openbox window manager
   4    Copyright (c) 2009        Dana Jansens
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    See the COPYING file for a copy of the GNU General Public License.
  17 */
  18
  19 #include "obt/ddfile.h"
  20 #include <glib.h>
  21 #ifdef HAVE_STRING_H
  22 #include <string.h>
  23 #endif
  24 #ifdef HAVE_STDIO_H
  25 #include <stdio.h>
  26 #endif
  27
  28 typedef struct _ObtDDParse {
  29     gchar *filename;
  30     gulong lineno;
  31 } ObtDDParse;
  32
  33 typedef enum {
  34     DATA_STRING,
  35     DATA_LOCALESTRING,
  36     DATA_BOOLEAN,
  37     DATA_NUMERIC,
  38     NUM_DATA_TYPES
  39 } ObtDDDataType;
  40
  41 struct _ObtDDFile {
  42     ObtDDFileType type;
  43     gchar *name; /*!< Specific name for the object (eg Firefox) */
  44     gchar *generic; /*!< Generic name for the object (eg Web Browser) */
  45     gchar *comment; /*!< Comment/description to display for the object */
  46     gchar *icon; /*!< Name/path for an icon for the object */
  47
  48     union _ObtDDFileData {
  49         struct {
  50             gchar *exec; /*!< Executable to run for the app */
  51             gchar *wdir; /*!< Working dir to run the app in */
  52             gboolean term; /*!< Run the app in a terminal or not */
  53             ObtDDFileAppOpen open;
  54
  55             /* XXX gchar**? or something better, a mime struct.. maybe
  56                glib has something i can use. */
  57             gchar **mime; /*!< Mime types the app can open */
  58
  59             ObtDDFileAppStartup startup;
  60             gchar *startup_wmclass;
  61         } app;
  62         struct {
  63             gchar *url;
  64         } link;
  65         struct {
  66         } dir;
  67     } d;
  68 };
  69
  70 static void parse_error(const gchar *m, const ObtDDParse *const parse,
  71                         gboolean *error)
  72 {
  73     if (!parse->filename)
  74         g_warning("%s at line %lud of input\n", m, parse->lineno);
  75     else
  76         g_warning("%s at line %lud of file %s\n",
  77                   m, parse->lineno, parse->filename);
  78     if (error) *error = TRUE;
  79 }
  80
  81 /* reads an input string, strips out invalid stuff, and parses
  82    backslash-stuff */
  83 static gchar* parse_string(const gchar *in, gboolean locale,
  84                            const ObtDDParse *const parse,
  85                            gboolean *error)
  86 {
  87     const gint bytes = strlen(in);
  88     gboolean backslash;
  89     gchar *out, *o;
  90     const gchar *end, *i;
  91
  92     g_return_val_if_fail(in != NULL, NULL);
  93
  94     if (!locale) {
  95         end = in + bytes;
  96         for (i = in; i < end; ++i) {
  97             if (*i > 127) {
  98                 end = i;
  99                 parse_error("Invalid bytes in string", parse, error);
 100                 break;
 101             }
 102         }
 103     }
 104     else if (!g_utf8_validate(in, bytes, &end))
 105         parse_error("Invalid bytes in localestring", parse, error);
 106
 107     out = g_new(char, bytes + 1);
 108     i = in; o = out;
 109     backslash = FALSE;
 110     while (i < end) {
 111         const gchar *next = locale ? g_utf8_find_next_char(i, end) : i+1;
 112         if (backslash) {
 113             switch(*i) {
 114             case 's': *o++ = ' '; break;
 115             case 'n': *o++ = '\n'; break;
 116             case 't': *o++ = '\t'; break;
 117             case 'r': *o++ = '\r'; break;
 118             case '\\': *o++ = '\\'; break;
 119             default:
 120                 parse_error((locale ?
 121                              "Invalid escape sequence in localestring" :
 122                              "Invalid escape sequence in string"),
 123                             parse, error);
 124             }
 125             backslash = FALSE;
 126         }
 127         else if (*i == '\\')
 128             backslash = TRUE;
 129         else {
 130             memcpy(o, i, next-i);
 131             o += next-i;
 132         }
 133         i = next;
 134     }
 135     *o = '\0';
 136     return o;
 137 }
 138
 139 static gboolean parse_bool(const gchar *in, const ObtDDParse *const parse,
 140                            gboolean *error)
 141 {
 142     if (strcmp(in, "true") == 0)
 143         return TRUE;
 144     else if (strcmp(in, "false") != 0)
 145         parse_error("Invalid boolean value", parse, error);
 146     return FALSE;
 147 }
 148
 149 static float parse_numeric(const gchar *in, const ObtDDParse *const parse,
 150     gboolean *error)
 151 {
 152     float out = 0;
 153     if (sscanf(in, "%f", &out) == 0)
 154         parse_error("Invalid numeric value", parse, error);
 155     return out;
 156 }