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f26f525f CF |
1 | /* UserSettings.cc |
2 | ||
3 | Copyright (c) 2009, Christopher Faylor | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | A copy of the GNU General Public License can be found at http://www.gnu.org | |
11 | */ | |
12 | ||
ead15931 RC |
13 | #include <stdio.h> |
14 | #include <stdlib.h> | |
15 | #include <string.h> | |
f882d56e | 16 | #include <memory> |
ead15931 | 17 | #include "UserSettings.h" |
f0fd8856 | 18 | #include "io_stream.h" |
4d10ec8c | 19 | #include "win32.h" |
f0fd8856 | 20 | |
f26f525f CF |
21 | class io_stream_key : public io_stream |
22 | { | |
23 | const char *key; | |
24 | std::string buf; | |
25 | public: | |
26 | io_stream_key (const char *); | |
27 | ~io_stream_key (); | |
26922cd2 | 28 | int set_mtime(time_t) {return 0;} |
f26f525f CF |
29 | time_t get_mtime () {return 0;} |
30 | mode_t get_mode () {return 0;} | |
31 | size_t get_size () {return 0;} | |
32 | ssize_t read (void *buffer, size_t len) {return 0;} | |
33 | ssize_t write (const void *buffer, size_t len) {return 0;} | |
34 | ssize_t peek (void *buffer, size_t len) {return 0;} | |
67f7a530 | 35 | off_t tell () {return 0;} |
44d31ea0 | 36 | off_t seek (off_t, io_stream_seek_t) {return 0;} |
f26f525f CF |
37 | int error () {return 0;} |
38 | void operator << (std::string); | |
39 | void operator << (const char *); | |
40 | friend io_stream *UserSettings::open (const char *); | |
41 | }; | |
ead15931 | 42 | |
f26f525f | 43 | UserSettings *UserSettings::global; |
ead15931 | 44 | |
55ea101d | 45 | // '#' indicates a comment if it's the first non-whitespace character. |
f26f525f CF |
46 | static char * |
47 | trim (char *p) | |
ead15931 | 48 | { |
f26f525f | 49 | p += strspn (p, " \t"); |
55ea101d KB |
50 | if (*p == '#') |
51 | *p = '\0'; | |
52 | for (char *q = strchr (p, '\0') - 1; q >= p && (*q == ' ' || *q == '\t' || *q == '\r' || *q == '\n'); q--) | |
f26f525f CF |
53 | *q = '\0'; |
54 | return p; | |
ead15931 RC |
55 | } |
56 | ||
f26f525f CF |
57 | inline void |
58 | UserSettings::extend_table (ssize_t i) | |
ead15931 | 59 | { |
f26f525f CF |
60 | if (i < table_len) |
61 | return; | |
62 | table_len = i + 100; | |
63 | table = (Element **) realloc (table, sizeof (*table) * (table_len + 1)); | |
64 | table[i] = NULL; | |
ead15931 RC |
65 | } |
66 | ||
f26f525f CF |
67 | io_stream * |
68 | UserSettings::open_settings (const char *filename, std::string &pathname) | |
69 | { | |
70 | pathname = "file://"; | |
71 | pathname += cwd; | |
4d10ec8c | 72 | if (!isdirsep (cwd[cwd.size () - 1]) && !isdirsep (filename[0])) |
32049a60 | 73 | pathname += "/"; |
f26f525f | 74 | pathname += filename; |
26922cd2 | 75 | io_stream *f = io_stream::open(pathname, "rt", 0); |
f26f525f CF |
76 | if (!f) |
77 | { | |
78 | pathname = "cygfile:///etc/setup/"; | |
79 | pathname += filename; | |
26922cd2 | 80 | f = io_stream::open (pathname, "rt", 0); |
f26f525f CF |
81 | } |
82 | return f; | |
83 | } | |
ead15931 | 84 | |
bdf30e6e JT |
85 | UserSettings::UserSettings () |
86 | : table (NULL), table_len (-1) | |
ead15931 | 87 | { |
f26f525f CF |
88 | global = this; |
89 | extend_table (0); | |
bdf30e6e JT |
90 | } |
91 | ||
92 | void | |
93 | UserSettings::load (std::string local_dir) | |
94 | { | |
95 | cwd = local_dir; | |
127febea | 96 | io_stream *f = open_settings ("setup.rc", filename); |
f26f525f CF |
97 | |
98 | if (!f) | |
99 | return; | |
100 | ||
101 | size_t sz = f->get_size (); | |
f882d56e CV |
102 | std::unique_ptr<char[]> buf (new char [sz + 2]); |
103 | ssize_t szread = f->read (buf.get (), sz); | |
f26f525f CF |
104 | delete f; |
105 | ||
106 | if (szread > 0) | |
107 | { | |
108 | buf[szread] = '\0'; | |
109 | buf[szread + 1] = '\0'; | |
f882d56e | 110 | for (char *p = strtok (buf.get (), "\n"); p; p = strtok (p, "\n")) |
f26f525f CF |
111 | { |
112 | char *eol = strchr (p, '\0'); | |
113 | char *thiskey = trim (p); | |
114 | if (!*thiskey) | |
115 | { | |
116 | p = eol + 1; | |
117 | continue; | |
118 | } | |
119 | std::string thisval; | |
120 | const char *nl = ""; | |
121 | while (*(p = eol + 1)) | |
122 | { | |
123 | if (*p != ' ' && *p != '\t') | |
124 | break; | |
125 | eol = strchr (p, '\n'); | |
126 | if (eol) | |
127 | *eol = '\0'; | |
128 | else | |
129 | eol = strchr (p, '\0'); | |
130 | char *s = trim (p); | |
131 | if (*s) | |
132 | { | |
133 | thisval += nl; | |
134 | thisval += s; | |
135 | nl = "\n"; | |
136 | } | |
137 | } | |
138 | set (thiskey, thisval); | |
139 | } | |
140 | } | |
ead15931 RC |
141 | } |
142 | ||
f26f525f CF |
143 | unsigned int |
144 | UserSettings::get_index (const char *key) | |
ead15931 | 145 | { |
f26f525f CF |
146 | unsigned int i; |
147 | for (i = 0; table[i]; i++) | |
148 | if (strcmp (key, table[i]->key) == 0) | |
149 | break; | |
150 | return i; | |
ead15931 | 151 | } |
bf137801 | 152 | |
f26f525f CF |
153 | const char * |
154 | UserSettings::get (const char *key) | |
bf137801 | 155 | { |
f26f525f | 156 | unsigned int i = get_index (key); |
f57981db | 157 | return table[i] ? table[i]->value : NULL; |
f26f525f CF |
158 | } |
159 | ||
160 | const char * | |
161 | UserSettings::set (const char *key, const char *val) | |
162 | { | |
163 | ssize_t i = get_index (key); | |
164 | if (table[i]) | |
165 | { | |
166 | free ((void *) table[i]->key); | |
167 | free ((void *) table[i]->value); | |
168 | } | |
169 | else | |
170 | { | |
171 | extend_table (i); | |
172 | table[i] = new Element (); | |
173 | table[i + 1] = NULL; | |
174 | } | |
175 | table[i]->key = strdup (key); | |
176 | table[i]->value = strdup (val); | |
177 | return table[i]->value; | |
bf137801 RC |
178 | } |
179 | ||
180 | void | |
f26f525f | 181 | UserSettings::save () |
bf137801 | 182 | { |
26922cd2 | 183 | io_stream *f = io_stream::open(filename, "wb", 0644); |
f26f525f CF |
184 | if (!f) |
185 | return; | |
186 | for (Element **e = table; *e; e++) | |
187 | { | |
188 | f->write ((*e)->key, strlen ((*e)->key)); | |
189 | f->write ("\n", 1); | |
190 | std::string s = (*e)->value; | |
191 | s.append ("\n"); | |
192 | size_t n; | |
193 | for (int i = 0; (n = s.find_first_of ('\n', i)) != std::string::npos; i = n + 1) | |
194 | { | |
195 | std::string elem = s.substr (i, 1 + n - i); | |
196 | f->write ("\t", 1); | |
197 | f->write (elem.c_str (), elem.length ()); | |
198 | } | |
199 | } | |
200 | delete f; | |
bf137801 | 201 | } |
f0fd8856 RC |
202 | |
203 | io_stream * | |
f26f525f | 204 | UserSettings::open (const char *key) |
f0fd8856 | 205 | { |
f26f525f CF |
206 | io_stream *f = new io_stream_key (key); |
207 | return f; | |
f0fd8856 RC |
208 | } |
209 | ||
f26f525f CF |
210 | io_stream_key::io_stream_key (const char *in_key) |
211 | : key (in_key), buf ("") | |
f0fd8856 | 212 | { |
f26f525f | 213 | } |
f0fd8856 | 214 | |
f26f525f CF |
215 | void |
216 | io_stream_key::operator << (std::string in) | |
217 | { | |
218 | buf += in; | |
219 | buf += "\n"; | |
220 | } | |
221 | ||
222 | void | |
223 | io_stream_key::operator << (const char *in) | |
224 | { | |
225 | std::string s = in; | |
226 | *this << s; | |
227 | } | |
228 | ||
229 | io_stream_key::~io_stream_key () | |
230 | { | |
231 | if (buf.length() > 0 && buf[buf.length () - 1] == '\n') | |
232 | buf.resize (buf.length () - 1); | |
233 | UserSettings::instance().set (key, buf); | |
f0fd8856 | 234 | } |