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38 * \brief Generic C string handling functions.
41 * \ingroup module_utility
43 #ifndef GMX_UTILITY_CSTRINGUTIL_H
44 #define GMX_UTILITY_CSTRINGUTIL_H
49 #include "../legacyheaders/types/simple.h"
51 #include "gmx_header_config.h"
53 /* Suppress Cygwin compiler warnings from using newlib version of
78 /** Continuation character. */
80 /** Comment sign to use. */
81 #define COMMENTSIGN ';'
84 * Strip trailing spaces and if s ends with a ::CONTINUE remove that too.
86 * \returns TRUE if s ends with a CONTINUE, FALSE otherwise.
88 int continuing(char *s);
91 * Reads a line from a stream.
93 * This routine reads a string from stream of max length n
94 * and zero terminated, without newlines.
95 * \p s should be long enough (>= \p n)
97 char *fgets2(char *s, int n, FILE *stream);
99 /** Remove portion of a line after a ::COMMENTSIGN. */
100 void strip_comment(char *line);
102 /** Make a string uppercase. */
103 void upstring(char *str);
105 /** Remove leading whitespace from a string. */
106 void ltrim(char *str);
108 /** Remove trailing whitespace from a string. */
109 void rtrim(char *str);
111 /** Remove leading and trailing whitespace from a string. */
112 void trim(char *str);
114 /** Portable version of ctime_r. */
115 char *gmx_ctime_r(const time_t *clock, char *buf, int n);
117 /** Prints creation time stamp and user information into a file as comments. */
118 void nice_header(FILE *out, const char *fn);
120 /** Version of gmx_strcasecmp() that also ignores '-' and '_'. */
121 int gmx_strcasecmp_min(const char *str1, const char *str2);
122 /** Version of gmx_strncasecmp() that also ignores '-' and '_'. */
123 int gmx_strncasecmp_min(const char *str1, const char *str2, int n);
125 /** Case-insensitive strcmp(). */
126 int gmx_strcasecmp(const char *str1, const char *str2);
127 /** Case-insensitive strncmp(). */
128 int gmx_strncasecmp(const char *str1, const char *str2, int n);
130 /** Creates a duplicate of \p src. */
131 char *gmx_strdup(const char *src);
132 /** Duplicates first \p n characters of \p src. */
133 char *gmx_strndup(const char *src, int n);
136 * Pattern matching with wildcards.
138 * \param[in] pattern Pattern to match against.
139 * \param[in] str String to match.
140 * \returns 0 on match, GMX_NO_WCMATCH if there is no match.
142 * Matches \p str against \p pattern, which may contain * and ? wildcards.
143 * All other characters are matched literally.
144 * Currently, it is not possible to match literal * or ?.
146 int gmx_wcmatch(const char *pattern, const char *str);
148 /** Return value for gmx_wcmatch() when there is no match. */
149 #define GMX_NO_WCMATCH 1
151 /** Magic hash initialization number from Dan J. Bernstein. */
152 extern const unsigned int
153 gmx_string_hash_init;
156 * Return a hash of the string according to Dan J. Bernsteins algorithm.
158 * \param[in] s String to calculate hash for.
159 * \param[in] hash_init Initial (or previous) hash value.
160 * \returns Updated hash value (hash_init combined with string hash).
162 * On the first invocation for a new string, use the constant
163 * gmx_string_hash_init for the second argument. If you want to create a hash
164 * corresponding to several concatenated strings, provide the returned hash
165 * value as hash_init for the second string, etc.
168 gmx_string_fullhash_func(const char *s, unsigned int hash_init);
171 * Return a hash of the string according to Dan J. Bernsteins algorithm.
173 * \param[in] s String to calculate hash for.
174 * \param[in] hash_init Initial (or previous) hash value.
175 * \returns Updated hash value (hash_init combined with string hash).
177 * Identical to gmx_string_fullhash_func, except that
178 * this routine only uses characters for which isalnum(c) is true,
179 * and all characters are converted to upper case.
182 gmx_string_hash_func(const char *s, unsigned int hash_init);
185 * Wraps lines, optionally indenting lines.
187 * Wraps lines at \p linewidth, indenting all following lines by \p indent
188 * spaces. A temp buffer is allocated and returned, which can be disposed of
189 * if no longer needed.
190 * If \p bIndentFirst is FALSE, then the first line will not be indented, only
191 * the lines that are created due to wapping.
193 char *wrap_lines(const char *buf, int line_width, int indent,
194 gmx_bool bIndentFirst);
197 * Convert a string to gmx_int64_t.
199 * This method works as the standard library function strtol(), except that it
200 * does not support different bases.
202 gmx_int64_t str_to_int64_t(const char *str, char **endptr);
204 #ifdef GMX_NATIVE_WINDOWS
205 #define snprintf _snprintf
208 /*! \brief Construct an array of digits found in the input string
210 * \param[in] digitstring String that must contain only digits
211 * \param[out] ndigits Size of return array with the values of the digits
212 * \param[out] digitlist Array of digits found in
213 * digitstring. Allocated by this function
214 * with size *ndigits. Calling code is
215 * responsible for deallocation.
217 * If digitstring is NULL, then ndigits is set to zero and digitlist
218 * to NULL. If digitstring contains a non-digit character, a fatal
221 void parse_digits_from_plain_string(const char *digitstring, int *ndigits, int **digitlist);