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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"
60 /** Continuation character. */
62 /** Comment sign to use. */
63 #define COMMENTSIGN ';'
66 * Strip trailing spaces and if s ends with a ::CONTINUE remove that too.
68 * \returns TRUE if s ends with a CONTINUE, FALSE otherwise.
70 int continuing(char *s);
73 * Reads a line from a stream.
75 * This routine reads a string from stream of max length n
76 * and zero terminated, without newlines.
77 * \p s should be long enough (>= \p n)
79 char *fgets2(char *s, int n, FILE *stream);
81 /** Remove portion of a line after a ::COMMENTSIGN. */
82 void strip_comment(char *line);
84 /** Make a string uppercase. */
85 void upstring(char *str);
87 /** Remove leading whitespace from a string. */
88 void ltrim(char *str);
90 /** Remove trailing whitespace from a string. */
91 void rtrim(char *str);
93 /** Remove leading and trailing whitespace from a string. */
96 /** Portable version of ctime_r. */
97 char *gmx_ctime_r(const time_t *clock, char *buf, int n);
99 /** Prints creation time stamp and user information into a file as comments. */
100 void nice_header(FILE *out, const char *fn);
102 /** Version of gmx_strcasecmp() that also ignores '-' and '_'. */
103 int gmx_strcasecmp_min(const char *str1, const char *str2);
104 /** Version of gmx_strncasecmp() that also ignores '-' and '_'. */
105 int gmx_strncasecmp_min(const char *str1, const char *str2, int n);
107 /** Case-insensitive strcmp(). */
108 int gmx_strcasecmp(const char *str1, const char *str2);
109 /** Case-insensitive strncmp(). */
110 int gmx_strncasecmp(const char *str1, const char *str2, int n);
112 /** Creates a duplicate of \p src. */
113 char *gmx_strdup(const char *src);
114 /** Duplicates first \p n characters of \p src. */
115 char *gmx_strndup(const char *src, int n);
118 * Pattern matching with wildcards.
120 * \param[in] pattern Pattern to match against.
121 * \param[in] str String to match.
122 * \returns 0 on match, GMX_NO_WCMATCH if there is no match.
124 * Matches \p str against \p pattern, which may contain * and ? wildcards.
125 * All other characters are matched literally.
126 * Currently, it is not possible to match literal * or ?.
128 int gmx_wcmatch(const char *pattern, const char *str);
130 /** Return value for gmx_wcmatch() when there is no match. */
131 #define GMX_NO_WCMATCH 1
133 /** Magic hash initialization number from Dan J. Bernstein. */
134 extern const unsigned int
135 gmx_string_hash_init;
138 * Return a hash of the string according to Dan J. Bernsteins algorithm.
140 * \param[in] s String to calculate hash for.
141 * \param[in] hash_init Initial (or previous) hash value.
142 * \returns Updated hash value (hash_init combined with string hash).
144 * On the first invocation for a new string, use the constant
145 * gmx_string_hash_init for the second argument. If you want to create a hash
146 * corresponding to several concatenated strings, provide the returned hash
147 * value as hash_init for the second string, etc.
150 gmx_string_fullhash_func(const char *s, unsigned int hash_init);
153 * Return a hash of the string according to Dan J. Bernsteins algorithm.
155 * \param[in] s String to calculate hash for.
156 * \param[in] hash_init Initial (or previous) hash value.
157 * \returns Updated hash value (hash_init combined with string hash).
159 * Identical to gmx_string_fullhash_func, except that
160 * this routine only uses characters for which isalnum(c) is true,
161 * and all characters are converted to upper case.
164 gmx_string_hash_func(const char *s, unsigned int hash_init);
167 * Wraps lines, optionally indenting lines.
169 * Wraps lines at \p linewidth, indenting all following lines by \p indent
170 * spaces. A temp buffer is allocated and returned, which can be disposed of
171 * if no longer needed.
172 * If \p bIndentFirst is FALSE, then the first line will not be indented, only
173 * the lines that are created due to wapping.
175 char *wrap_lines(const char *buf, int line_width, int indent,
176 gmx_bool bIndentFirst);
179 * Convert a string to gmx_int64_t.
181 * This method works as the standard library function strtol(), except that it
182 * does not support different bases.
184 gmx_int64_t str_to_int64_t(const char *str, char **endptr);
186 #ifdef GMX_NATIVE_WINDOWS
187 #define snprintf _snprintf
190 /*! \brief Construct an array of digits found in the input string
192 * \param[in] digitstring String that must contain only digits
193 * \param[out] ndigits Size of return array with the values of the digits
194 * \param[out] digitlist Array of digits found in
195 * digitstring. Allocated by this function
196 * with size *ndigits. Calling code is
197 * responsible for deallocation.
199 * If digitstring is NULL, then ndigits is set to zero and digitlist
200 * to NULL. If digitstring contains a non-digit character, a fatal
203 void parse_digits_from_plain_string(const char *digitstring, int *ndigits, int **digitlist);