source/libcgreen/parameters.c

0001 #include <cgreen/parameters.h>
0002 #include <cgreen/vector.h>
0003 #include <stdlib.h>
0004 #include <string.h>
0005 #include <ctype.h>
0006
0007 #ifdef __cplusplus
0008 namespace cgreen {
0009 #endif
0010 #ifdef _MSC_VER
0011 //disable warning on windows
0012 //'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C++ conformant name: _strdup.
0013 #pragma warning(disable:4996)
0014 #endif
0015
0016 static char *tokenise_by_commas_and_whitespace(char *list);
0017 static char *skip_nulls_until(char *pointer, char *pointer_end);
0018 static char *end_of_token(char *token);
0019 static char *strip_box_double(char *token);
0020 static char *strip_d_macro(char *token);
0021
0022 static char *stringdup(const char *string) {
0023     return strcpy((char *)malloc(strlen(string)+1), string);
0024 }
0025
0026 CgreenVector *create_vector_of_names(const char *parameters) {
0027     char *parameters_to_tokenize;
0028     char *parameters_end;
0029     char *tokens;
0030     char *token;
0031     CgreenVector *names = create_cgreen_vector(&free);
0032     if ((parameters == NULL) || (strlen(parameters) == 0)) {
0033         return names;
0034     }
0035
0036     parameters_to_tokenize = stringdup(parameters);
0037     if (parameters_to_tokenize == NULL) {
0038         return names;
0039     }
0040
0041     parameters_end = parameters_to_tokenize + strlen(parameters_to_tokenize);
0042     tokens = tokenise_by_commas_and_whitespace(parameters_to_tokenize);
0043     token = tokens;
0044     while (token < tokens + strlen(parameters)) {
0045         token = strip_d_macro(strip_box_double(skip_nulls_until(token, parameters_end)));
0046         cgreen_vector_add(names, (void*)stringdup(token));
0047         token = end_of_token(token);
0048     }
0049
0050     free(tokens);
0051     return names;
0052 }
0053
0054 static char *tokenise_by_commas_and_whitespace(char *list) {
0055     size_t i, length;
0056
0057     for (i = 0, length = strlen(list); i < length; i++) {
0058         if (isspace((int)list[i]) || list[i] == ',') {
0059             list[i] = '\0';
0060         }
0061     }
0062
0063     return list;
0064 }
0065
0066 static char *skip_nulls_until(char *pointer, char *pointer_end) {
0067     while (*pointer == '\0' && pointer < pointer_end) {
0068         pointer++;
0069     }
0070
0071     return pointer;
0072 }
0073
0074 static char *end_of_token(char *token) {
0075     return token + strlen(token);
0076 }
0077
0078 static char *strip_box_double(char *token) {
0079     if ((strncmp("box_double(", token, 11) == 0) && (*(end_of_token(token) - 1) == ')')) {
0080         memmove(token, token + 11, strlen(token) - 11 + 1);
0081         *(end_of_token(token) - 1) = '\0';
0082     }
0083
0084     return token;
0085 }
0086
0087 static char *strip_d_macro(char *token) {
0088     if ((strncmp("d(", token, 2) == 0) && (*(end_of_token(token) - 1) == ')')) {
0089         memmove(token, token + 2, strlen(token) - 2 + 1);
0090         *(end_of_token(token) - 1) = '\0';
0091     }
0092
0093     return token;
0094 }
0095
0096 #ifdef __cplusplus
0097 } // namespace cgreen
0098 #endif
0099
0100 /* vim: set ts=4 sw=4 et cindent: */