/* 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()).
+ */
+#define tal_strdup(ctx, p) tal_strdup_(ctx, p, TAL_LABEL(char, "[]"))
+char *tal_strdup_(const tal_t *ctx, const char *p TAKES, const char *label);
+
+/**
+ * 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.
+ */
+#define tal_strndup(ctx, p, n) tal_strndup_(ctx, p, n, TAL_LABEL(char, "[]"))
+char *tal_strndup_(const tal_t *ctx, const char *p TAKES, size_t n,
+ const char *label);
+
+/**
+ * tal_fmt - allocate a formatted string
+ * @ctx: NULL, or tal allocated object to be parent.
+ * @fmt: the printf-style format (can be take()).
+ */
+#define tal_fmt(ctx, ...) \
+ tal_fmt_(ctx, TAL_LABEL(char, "[]"), __VA_ARGS__)
+char *tal_fmt_(const tal_t *ctx, const char *label, const char *fmt TAKES,
+ ...) PRINTF_FMT(3,4);
+
+/**
+ * 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.
+ */
+#define tal_vfmt(ctx, fmt, va) \
+ tal_vfmt_(ctx, fmt, va, TAL_LABEL(char, "[]"))
+char *tal_vfmt_(const tal_t *ctx, const char *fmt TAKES, va_list ap,
+ const char *label)
+ 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 TAKES, ...) 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 TAKES, 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()).
+ */
+#define tal_strcat(ctx, s1, s2) tal_strcat_(ctx, s1, s2, TAL_LABEL(char, "[]"))
+char *tal_strcat_(const tal_t *ctx, const char *s1 TAKES, const char *s2 TAKES,
+ const char *label);
+
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()).
* 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);
+#define tal_strsplit(ctx, string, delims, flag) \
+ tal_strsplit_(ctx, string, delims, flag, TAL_LABEL(char *, "[]"))
+char **tal_strsplit_(const tal_t *ctx,
+ const char *string TAKES,
+ const char *delims TAKES,
+ enum strsplit flag,
+ const char *label);
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);
+#define tal_strjoin(ctx, strings, delim, flags) \
+ tal_strjoin_(ctx, strings, delim, flags, TAL_LABEL(char, "[]"))
+char *tal_strjoin_(const void *ctx,
+ char *strings[] TAKES,
+ const char *delim TAKES,
+ enum strjoin flags,
+ const char *label);
/**
- * 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())
* regcomp(3), regex(3).
*
* Example:
- * // Given 'My name is Rusty' outputs 'Hello Rusty!'
- * // Given 'my first name is Rusty Russell' outputs 'Hello Rusty Russell!'
- * // Given 'My name isnt Rusty Russell' outputs 'Hello there!'
+ * // Given "My name is Rusty" outputs "Hello Rusty!\n"
+ * // Given "my first name is Rusty Russell" outputs "Hello Rusty Russell!\n"
+ * // Given "My name isnt Rusty Russell" outputs "Hello there!\n"
* int main(int argc, char *argv[])
* {
* char *person, *input;
*
+ * (void)argc;
* // 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, ...);
+#define tal_strreg(ctx, string, ...) \
+ tal_strreg_(ctx, string, TAL_LABEL(char, "[]"), __VA_ARGS__)
+bool tal_strreg_(const void *ctx, const char *string TAKES,
+ const char *label, const char *regex, ...);
#endif /* CCAN_STR_TAL_H */