diff options
Diffstat (limited to 'lib/skin_parser/skin_scan.c')
| -rw-r--r-- | lib/skin_parser/skin_scan.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/lib/skin_parser/skin_scan.c b/lib/skin_parser/skin_scan.c new file mode 100644 index 0000000000..79f7162aab --- /dev/null +++ b/lib/skin_parser/skin_scan.c @@ -0,0 +1,218 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2010 Robert Bieber + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ + +#include <stdio.h> +#include <ctype.h> +#include <stdlib.h> +#include <string.h> + +#include "skin_scan.h" +#include "skin_debug.h" +#include "symbols.h" +#include "skin_parser.h" + +/* Scanning Functions */ + +/* Simple function to advance a char* past a comment */ +void skip_comment(char** document) +{ + while(**document != '\n' && **document != '\0') + (*document)++; + if(**document == '\n') + (*document)++; +} + +void skip_whitespace(char** document) +{ + while(**document == ' ' || **document == '\t') + (*document)++; +} + +void skip_arglist(char** document) +{ + if(**document == ARGLISTOPENSYM) + (*document)++; + while(**document && **document != ARGLISTCLOSESYM) + { + if(**document == TAGSYM) + { + (*document)++; + if(**document == '\0') + break; + (*document)++; + } + else if(**document == ARGLISTOPENSYM) + skip_arglist(document); + else if(**document == ENUMLISTOPENSYM) + skip_enumlist(document); + else if(**document == COMMENTSYM) + skip_comment(document); + else + (*document)++; + } + if(**document == ARGLISTCLOSESYM) + (*document)++; +} + +void skip_enumlist(char** document) +{ + if(**document == ENUMLISTOPENSYM) + (*document)++; + while(**document && **document != ENUMLISTCLOSESYM) + { + if(**document == TAGSYM) + { + (*document)++; + if(**document == '\0') + break; + (*document)++; + } + else if(**document == ARGLISTOPENSYM) + skip_arglist(document); + else if(**document == ENUMLISTOPENSYM) + skip_enumlist(document); + else if(**document == COMMENTSYM) + skip_comment(document); + else + (*document)++; + } + + if(**document == ENUMLISTCLOSESYM) + (*document)++; +} + +char* scan_string(char** document) +{ + + char* cursor = *document; + int length = 0; + char* buffer = NULL; + int i; + + while(*cursor != ARGLISTSEPERATESYM && *cursor != ARGLISTCLOSESYM && + *cursor != '\0') + { + if(*cursor == COMMENTSYM) + { + skip_comment(&cursor); + continue; + } + + if(*cursor == TAGSYM) + cursor++; + + if(*cursor == '\n') + { + skin_error(UNEXPECTED_NEWLINE); + return NULL; + } + + length++; + cursor++; + } + + /* Copying the string */ + cursor = *document; + buffer = skin_alloc_string(length); + buffer[length] = '\0'; + for(i = 0; i < length; i++) + { + if(*cursor == TAGSYM) + cursor++; + + if(*cursor == COMMENTSYM) + { + skip_comment(&cursor); + i--; + continue; + } + + buffer[i] = *cursor; + cursor++; + } + + *document = cursor; + return buffer; +} + +int scan_int(char** document) +{ + + char* cursor = *document, *end; + int length = 0; + char buffer[16]; + int retval; + int i; + + while(isdigit(*cursor) || *cursor == COMMENTSYM || *cursor == '-') + { + if(*cursor == COMMENTSYM) + { + skip_comment(&cursor); + continue; + } + + length++; + cursor++; + } + if (length > 15) + length = 15; + end = cursor; + /* Copying to the buffer while avoiding comments */ + cursor = *document; + buffer[length] = '\0'; + for(i = 0; i < length; i++) + { + if(*cursor == COMMENTSYM) + { + skip_comment(&cursor); + i--; + continue; + } + + buffer[i] = *cursor; + cursor++; + + } + retval = atoi(buffer); + + *document = end; + return retval; +} + +int check_viewport(char* document) +{ + if(strlen(document) < 3) + return 0; + + if(document[0] != TAGSYM) + return 0; + + if(document[1] != 'V') + return 0; + + if(document[2] != ARGLISTOPENSYM + && document[2] != 'l' + && document[2] != 'i') + return 0; + + return 1; +} |