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355 lines
7.7 KiB
355 lines
7.7 KiB
/*
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Copyright (c) 2004-2012 Jay Sorg
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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read a config file
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*/
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#include "arch.h"
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#include "os_calls.h"
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#include "list.h"
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#include "file.h"
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#include "parse.h"
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/*****************************************************************************/
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/* returns error
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returns 0 if everything is ok
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returns 1 if problem reading file */
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static int APP_CC
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l_file_read_sections(int fd, int max_file_size, struct list* names)
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{
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struct stream* s;
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char text[256];
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char c;
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int in_it;
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int in_it_index;
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int len;
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int index;
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int rv;
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rv = 0;
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g_file_seek(fd, 0);
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in_it_index = 0;
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in_it = 0;
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g_memset(text, 0, 256);
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list_clear(names);
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make_stream(s);
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init_stream(s, max_file_size);
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len = g_file_read(fd, s->data, max_file_size);
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if (len > 0)
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{
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s->end = s->p + len;
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for (index = 0; index < len; index++)
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{
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in_uint8(s, c);
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if (c == '[')
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{
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in_it = 1;
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}
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else if (c == ']')
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{
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list_add_item(names, (tbus)g_strdup(text));
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in_it = 0;
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in_it_index = 0;
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g_memset(text, 0, 256);
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}
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else if (in_it)
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{
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text[in_it_index] = c;
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in_it_index++;
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}
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}
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}
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else if (len < 0)
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{
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rv = 1;
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}
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free_stream(s);
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return rv;
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}
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/*****************************************************************************/
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static int APP_CC
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file_read_line(struct stream* s, char* text)
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{
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int i;
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int skip_to_end;
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int at_end;
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char c;
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char* hold;
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skip_to_end = 0;
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if (!s_check_rem(s, 1))
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{
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return 1;
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}
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hold = s->p;
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i = 0;
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in_uint8(s, c);
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while (c != 10 && c != 13)
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{
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if (c == '#' || c == '!' || c == ';')
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{
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skip_to_end = 1;
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}
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if (!skip_to_end)
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{
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text[i] = c;
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i++;
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}
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if (s_check_rem(s, 1))
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{
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in_uint8(s, c);
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}
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else
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{
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c = 0;
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break;
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}
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}
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if (c == 10 || c == 13)
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{
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at_end = 0;
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while (c == 10 || c == 13)
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{
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if (s_check_rem(s, 1))
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{
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in_uint8(s, c);
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}
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else
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{
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at_end = 1;
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break;
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}
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}
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if (!at_end)
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{
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s->p--;
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}
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}
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text[i] = 0;
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if (text[0] == '[')
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{
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s->p = hold;
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return 1;
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}
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return 0;
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}
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/*****************************************************************************/
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/* returns error */
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static int APP_CC
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file_split_name_value(char* text, char* name, char* value)
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{
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int len;
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int i;
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int value_index;
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int name_index;
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int on_to;
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value_index = 0;
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name_index = 0;
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on_to = 0;
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name[0] = 0;
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value[0] = 0;
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len = g_strlen(text);
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for (i = 0; i < len; i++)
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{
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if (text[i] == '=')
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{
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on_to = 1;
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}
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else if (on_to)
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{
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value[value_index] = text[i];
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value_index++;
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value[value_index] = 0;
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}
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else
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{
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name[name_index] = text[i];
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name_index++;
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name[name_index] = 0;
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}
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}
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g_strtrim(name, 3); /* trim both right and left */
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g_strtrim(value, 3); /* trim both right and left */
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return 0;
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}
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/*****************************************************************************/
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/* return error */
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static int APP_CC
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l_file_read_section(int fd, int max_file_size, const char* section,
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struct list* names, struct list* values)
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{
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struct stream* s;
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char text[512];
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char name[512];
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char value[512];
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char* lvalue;
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char c;
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int in_it;
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int in_it_index;
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int len;
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int index;
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int file_size;
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file_size = 32 * 1024; /* 32 K file size limit */
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g_file_seek(fd, 0);
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in_it_index = 0;
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in_it = 0;
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g_memset(text, 0, 512);
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list_clear(names);
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list_clear(values);
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make_stream(s);
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init_stream(s, file_size);
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len = g_file_read(fd, s->data, file_size);
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if (len > 0)
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{
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s->end = s->p + len;
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for (index = 0; index < len; index++)
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{
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in_uint8(s, c);
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if (c == '[')
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{
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in_it = 1;
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}
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else if (c == ']')
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{
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if (g_strcasecmp(section, text) == 0)
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{
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file_read_line(s, text);
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while (file_read_line(s, text) == 0)
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{
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if (g_strlen(text) > 0)
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{
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file_split_name_value(text, name, value);
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list_add_item(names, (tbus)g_strdup(name));
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if (value[0] == '$')
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{
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lvalue = g_getenv(value + 1);
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if (lvalue != 0)
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{
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list_add_item(values, (tbus)g_strdup(lvalue));
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}
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else
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{
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list_add_item(values, (tbus)g_strdup(""));
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}
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}
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else
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{
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list_add_item(values, (tbus)g_strdup(value));
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}
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}
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}
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free_stream(s);
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return 0;
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}
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in_it = 0;
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in_it_index = 0;
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g_memset(text, 0, 512);
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}
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else if (in_it)
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{
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text[in_it_index] = c;
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in_it_index++;
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}
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}
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}
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free_stream(s);
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return 1;
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}
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/*****************************************************************************/
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/* returns error
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returns 0 if everything is ok
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returns 1 if problem reading file */
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/* 32 K file size limit */
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int APP_CC
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file_read_sections(int fd, struct list* names)
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{
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return l_file_read_sections(fd, 32 * 1024, names);
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}
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/*****************************************************************************/
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/* return error */
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/* this function should be prefered over file_read_sections because it can
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read any file size */
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int APP_CC
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file_by_name_read_sections(const char* file_name, struct list* names)
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{
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int fd;
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int file_size;
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int rv;
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file_size = g_file_get_size(file_name);
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if (file_size < 1)
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{
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return 1;
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}
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fd = g_file_open(file_name);
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if (fd < 1)
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{
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return 1;
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}
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rv = l_file_read_sections(fd, file_size, names);
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g_file_close(fd);
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return rv;
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}
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/*****************************************************************************/
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/* return error */
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/* 32 K file size limit */
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int APP_CC
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file_read_section(int fd, const char* section,
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struct list* names, struct list* values)
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{
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return l_file_read_section(fd, 32 * 1024, section, names, values);
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}
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/*****************************************************************************/
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/* return error */
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/* this function should be prefered over file_read_section because it can
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read any file size */
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int APP_CC
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file_by_name_read_section(const char* file_name, const char* section,
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struct list* names, struct list* values)
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{
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int fd;
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int file_size;
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int rv;
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file_size = g_file_get_size(file_name);
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if (file_size < 1)
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{
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return 1;
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}
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fd = g_file_open(file_name);
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if (fd < 1)
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{
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return 1;
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}
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rv = l_file_read_section(fd, file_size, section, names, values);
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g_file_close(fd);
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return rv;
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}
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