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38 * \brief Generic string handling functions.
59 #include "../utility/gmx_header_config.h"
61 #include "types/simple.h"
63 /* Suppress Cygwin compiler warnings from using newlib version of
86 /** Continuation character. */
88 /** Comment sign to use. */
89 #define COMMENTSIGN ';'
92 * Strip trailing spaces and if s ends with a ::CONTINUE remove that too.
94 * \returns TRUE if s ends with a CONTINUE, FALSE otherwise.
96 int continuing(char *s);
99 * Reads a line from a stream.
101 * This routine reads a string from stream of max length n
102 * and zero terminated, without newlines.
103 * \p s should be long enough (>= \p n)
105 char *fgets2(char *s, int n, FILE *stream);
107 /** Remove portion of a line after a ::COMMENTSIGN. */
108 void strip_comment(char *line);
110 /** Make a string uppercase. */
111 void upstring(char *str);
113 /** Remove leading whitespace from a string. */
114 void ltrim(char *str);
116 /** Remove trailing whitespace from a string. */
117 void rtrim(char *str);
119 /** Remove leading and trailing whitespace from a string. */
120 void trim(char *str);
122 /** Portable version of ctime_r. */
123 char *gmx_ctime_r(const time_t *clock, char *buf, int n);
125 /** Prints creation time stamp and user information into a file as comments. */
126 void nice_header(FILE *out, const char *fn);
128 /** Version of gmx_strcasecmp() that also ignores '-' and '_'. */
129 int gmx_strcasecmp_min(const char *str1, const char *str2);
130 /** Version of gmx_strncasecmp() that also ignores '-' and '_'. */
131 int gmx_strncasecmp_min(const char *str1, const char *str2, int n);
133 /** Case-insensitive strcmp(). */
134 int gmx_strcasecmp(const char *str1, const char *str2);
135 /** Case-insensitive strncmp(). */
136 int gmx_strncasecmp(const char *str1, const char *str2, int n);
138 /** Creates a duplicate of \p src. */
139 char *gmx_strdup(const char *src);
140 /** Duplicates first \p n characters of \p src. */
141 char *gmx_strndup(const char *src, int n);
144 * Pattern matching with wildcards.
146 * \param[in] pattern Pattern to match against.
147 * \param[in] str String to match.
148 * \returns 0 on match, GMX_NO_WCMATCH if there is no match.
150 * Matches \p str against \p pattern, which may contain * and ? wildcards.
151 * All other characters are matched literally.
152 * Currently, it is not possible to match literal * or ?.
154 int gmx_wcmatch(const char *pattern, const char *str);
156 /** Magic hash initialization number from Dan J. Bernstein. */
157 extern const unsigned int
158 gmx_string_hash_init;
161 * Return a hash of the string according to Dan J. Bernsteins algorithm.
163 * \param[in] s String to calculate hash for.
164 * \param[in] hash_init Initial (or previous) hash value.
165 * \returns Updated hash value (hash_init combined with string hash).
167 * On the first invocation for a new string, use the constant
168 * gmx_string_hash_init for the second argument. If you want to create a hash
169 * corresponding to several concatenated strings, provide the returned hash
170 * value as hash_init for the second string, etc.
173 gmx_string_fullhash_func(const char *s, unsigned int hash_init);
176 * Return a hash of the string according to Dan J. Bernsteins algorithm.
178 * \param[in] s String to calculate hash for.
179 * \param[in] hash_init Initial (or previous) hash value.
180 * \returns Updated hash value (hash_init combined with string hash).
182 * Identical to gmx_string_fullhash_func, except that
183 * this routine only uses characters for which isalnum(c) is true,
184 * and all characters are converted to upper case.
187 gmx_string_hash_func(const char *s, unsigned int hash_init);
189 /** Return value for gmx_wcmatch() when there is no match. */
190 #define GMX_NO_WCMATCH 1
192 /** Our implementation of strsep, the thread-safe replacement for strtok. */
193 char *gmx_strsep(char **stringp, const char *delim);
196 * Wraps lines, optionally indenting lines.
198 * Wraps lines at \p linewidth, indenting all following lines by \p indent
199 * spaces. A temp buffer is allocated and returned, which can be disposed of
200 * if no longer needed.
201 * If \p bIndentFirst is FALSE, then the first line will not be indented, only
202 * the lines that are created due to wapping.
204 char *wrap_lines(const char *buf, int line_width, int indent,
205 gmx_bool bIndentFirst);
207 /** Implementation of the well-known Perl function split. */
208 char **split(char sep, const char *str);
211 * Convert a string to gmx_int64_t.
213 * This method works as the standard library function strtol(), except that it
214 * does not support different bases.
217 * The following differences are present from the standard behavior:
218 * - \p endptr cannot be NULL.
219 * - If an overflow occurs, returns zero and \p *endptr will equal \p str.
220 * errno is still set to ERANGE.
222 gmx_int64_t str_to_int64_t(const char *str, char **endptr);
224 #ifdef GMX_NATIVE_WINDOWS
225 #define snprintf _snprintf
232 #endif /* _string2_h */