/* Licensed under BSD-MIT - see LICENSE file for details */
#ifndef CCAN_STR_TAL_H
#define CCAN_STR_TAL_H
+#ifdef TAL_USE_TALLOC
+#include <ccan/tal/talloc/talloc.h>
+#else
#include <ccan/tal/tal.h>
-#include <ccan/tal/tal.h>
+#endif
#include <string.h>
#include <stdbool.h>
+/**
+ * tal_strdup - duplicate a string
+ * @ctx: NULL, or tal allocated object to be parent.
+ * @p: the string to copy (can be take()).
+ */
+char *tal_strdup(const tal_t *ctx, const char *p);
+
+/**
+ * tal_strndup - duplicate a limited amount of a string.
+ * @ctx: NULL, or tal allocated object to be parent.
+ * @p: the string to copy (can be take()).
+ * @n: the maximum length to copy.
+ *
+ * Always gives a nul-terminated string, with strlen() <= @n.
+ */
+char *tal_strndup(const tal_t *ctx, const char *p, size_t n);
+
+/**
+ * tal_fmt - allocate a formatted string
+ * @ctx: NULL, or tal allocated object to be parent.
+ * @fmt: the printf-style format (can be take()).
+ */
+char *tal_fmt(const tal_t *ctx, const char *fmt, ...) PRINTF_FMT(2,3);
+
+/**
+ * tal_vfmt - allocate a formatted string (va_list version)
+ * @ctx: NULL, or tal allocated object to be parent.
+ * @fmt: the printf-style format (can be take()).
+ * @va: the va_list containing the format args.
+ */
+char *tal_vfmt(const tal_t *ctx, const char *fmt, va_list ap)
+ PRINTF_FMT(2,0);
+
+/**
+ * tal_append_fmt - append a formatted string to a talloc string.
+ * @baseptr: a pointer to the tal string to be appended to.
+ * @fmt: the printf-style format (can be take()).
+ *
+ * Returns false on allocation failure.
+ */
+bool tal_append_fmt(char **baseptr, const char *fmt, ...) PRINTF_FMT(2,3);
+
+/**
+ * tal_append_vfmt - append a formatted string to a talloc string (va_list)
+ * @baseptr: a pointer to the tal string to be appended to.
+ * @fmt: the printf-style format (can be take()).
+ * @va: the va_list containing the format args.
+ *
+ * Returns false on allocation failure.
+ */
+bool tal_append_vfmt(char **baseptr, const char *fmt, va_list ap);
+
+/**
+ * tal_strcat - join two strings together
+ * @ctx: NULL, or tal allocated object to be parent.
+ * @s1: the first string (can be take()).
+ * @s2: the second string (can be take()).
+ */
+char *tal_strcat(const tal_t *ctx, const char *s1, const char *s2);
+
enum strsplit {
STR_EMPTY_OK,
STR_NO_EMPTY
};
/**
- * strsplit - Split string into an array of substrings
+ * tal_strsplit - Split string into an array of substrings
* @ctx: the context to tal from (often NULL).
* @string: the string to split (can be take()).
* @delims: delimiters where lines should be split (can be take()).
* Multiple delimiters result in empty substrings. By definition, no
* delimiters will appear in the substrings.
*
- * The final char * in the array will be NULL.
+ * The final char * in the array will be NULL, and tal_count() will
+ * return the number of elements plus 1 (for that NULL).
*
* Example:
* #include <ccan/tal/str/str.h>
* unsigned int i, long_lines = 0;
*
* // Can only fail on out-of-memory.
- * lines = strsplit(NULL, string, "\n", STR_NO_EMPTY);
+ * lines = tal_strsplit(NULL, string, "\n", STR_NO_EMPTY);
* for (i = 0; lines[i] != NULL; i++)
* if (strlen(lines[i]) > 80)
* long_lines++;
* return long_lines;
* }
*/
-char **strsplit(const tal_t *ctx,
- const char *string, const char *delims, enum strsplit flags);
+char **tal_strsplit(const tal_t *ctx,
+ const char *string, const char *delims, enum strsplit flag);
enum strjoin {
STR_TRAIL,
};
/**
- * strjoin - Join an array of substrings into one long string
+ * tal_strjoin - Join an array of substrings into one long string
* @ctx: the context to tal from (often NULL).
* @strings: the NULL-terminated array of strings to join (can be take())
* @delim: the delimiter to insert between the strings (can be take())
* {
* char **lines, *ret;
*
- * lines = strsplit(NULL, string, "\n", STR_EMPTY_OK);
- * ret = strjoin(NULL, lines, "-- EOL\n", STR_TRAIL);
+ * lines = tal_strsplit(NULL, string, "\n", STR_EMPTY_OK);
+ * ret = tal_strjoin(NULL, lines, "-- EOL\n", STR_TRAIL);
* tal_free(lines);
* return ret;
* }
*/
-char *strjoin(const void *ctx, char *strings[], const char *delim,
- enum strjoin flags);
+char *tal_strjoin(const void *ctx, char *strings[], const char *delim,
+ enum strjoin flags);
/**
- * strreg - match and extract from a string via (extended) regular expressions.
+ * tal_strreg - match/extract from a string via (extended) regular expressions.
* @ctx: the context to tal from (often NULL)
* @string: the string to try to match (can be take())
* @regex: the regular expression to match (can be take())
* char *person, *input;
*
* // Join args and trim trailing space.
- * input = strjoin(NULL, argv+1, " ", STR_NO_TRAIL);
- * if (strreg(NULL, input, "[Mm]y (first )?name is ([A-Za-z ]+)",
- * NULL, &person))
+ * input = tal_strjoin(NULL, argv+1, " ", STR_NO_TRAIL);
+ * if (tal_strreg(NULL, input,
+ * "[Mm]y (first )?name is ([A-Za-z ]+)",
+ * NULL, &person))
* printf("Hello %s!\n", person);
* else
* printf("Hello there!\n");
* return 0;
* }
*/
-bool strreg(const void *ctx, const char *string, const char *regex, ...);
+bool tal_strreg(const void *ctx, const char *string, const char *regex, ...);
#endif /* CCAN_STR_TAL_H */
projects / ccan / blobdiff