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/* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. */ /* $Id: string.h,v 1.23 2007/09/13 04:48:16 each Exp $ */ #ifndef ISC_STRING_H #define ISC_STRING_H 1 /*! \file isc/string.h */ #include <isc/formatcheck.h> #include <isc/int.h> #include <isc/lang.h> #include <isc/platform.h> #include <isc/types.h> #include <string.h> #ifdef ISC_PLATFORM_HAVESTRINGSH #include <strings.h> #endif #define ISC_STRING_MAGIC 0x5e ISC_LANG_BEGINDECLS isc_uint64_t isc_string_touint64(char *source, char **endp, int base); /*%< * Convert the string pointed to by 'source' to isc_uint64_t. * * On successful conversion 'endp' points to the first character * after conversion is complete. * * 'base': 0 or 2..36 * * If base is 0 the base is computed from the string type. * * On error 'endp' points to 'source'. */ isc_result_t isc_string_copy(char *target, size_t size, const char *source); /* * Copy the string pointed to by 'source' to 'target' which is a * pointer to a string of at least 'size' bytes. * * Requires: * 'target' is a pointer to a char[] of at least 'size' bytes. * 'size' an integer > 0. * 'source' == NULL or points to a NUL terminated string. * * Ensures: * If result == ISC_R_SUCCESS * 'target' will be a NUL terminated string of no more * than 'size' bytes (including NUL). * * If result == ISC_R_NOSPACE * 'target' is undefined. * * Returns: * ISC_R_SUCCESS -- 'source' was successfully copied to 'target'. * ISC_R_NOSPACE -- 'source' could not be copied since 'target' * is too small. */ void isc_string_copy_truncate(char *target, size_t size, const char *source); /* * Copy the string pointed to by 'source' to 'target' which is a * pointer to a string of at least 'size' bytes. * * Requires: * 'target' is a pointer to a char[] of at least 'size' bytes. * 'size' an integer > 0. * 'source' == NULL or points to a NUL terminated string. * * Ensures: * 'target' will be a NUL terminated string of no more * than 'size' bytes (including NUL). */ isc_result_t isc_string_append(char *target, size_t size, const char *source); /* * Append the string pointed to by 'source' to 'target' which is a * pointer to a NUL terminated string of at least 'size' bytes. * * Requires: * 'target' is a pointer to a NUL terminated char[] of at * least 'size' bytes. * 'size' an integer > 0. * 'source' == NULL or points to a NUL terminated string. * * Ensures: * If result == ISC_R_SUCCESS * 'target' will be a NUL terminated string of no more * than 'size' bytes (including NUL). * * If result == ISC_R_NOSPACE * 'target' is undefined. * * Returns: * ISC_R_SUCCESS -- 'source' was successfully appended to 'target'. * ISC_R_NOSPACE -- 'source' could not be appended since 'target' * is too small. */ void isc_string_append_truncate(char *target, size_t size, const char *source); /* * Append the string pointed to by 'source' to 'target' which is a * pointer to a NUL terminated string of at least 'size' bytes. * * Requires: * 'target' is a pointer to a NUL terminated char[] of at * least 'size' bytes. * 'size' an integer > 0. * 'source' == NULL or points to a NUL terminated string. * * Ensures: * 'target' will be a NUL terminated string of no more * than 'size' bytes (including NUL). */ isc_result_t isc_string_printf(char *target, size_t size, const char *format, ...) ISC_FORMAT_PRINTF(3, 4); /* * Print 'format' to 'target' which is a pointer to a string of at least * 'size' bytes. * * Requires: * 'target' is a pointer to a char[] of at least 'size' bytes. * 'size' an integer > 0. * 'format' == NULL or points to a NUL terminated string. * * Ensures: * If result == ISC_R_SUCCESS * 'target' will be a NUL terminated string of no more * than 'size' bytes (including NUL). * * If result == ISC_R_NOSPACE * 'target' is undefined. * * Returns: * ISC_R_SUCCESS -- 'format' was successfully printed to 'target'. * ISC_R_NOSPACE -- 'format' could not be printed to 'target' since it * is too small. */ void isc_string_printf_truncate(char *target, size_t size, const char *format, ...) ISC_FORMAT_PRINTF(3, 4); /* * Print 'format' to 'target' which is a pointer to a string of at least * 'size' bytes. * * Requires: * 'target' is a pointer to a char[] of at least 'size' bytes. * 'size' an integer > 0. * 'format' == NULL or points to a NUL terminated string. * * Ensures: * 'target' will be a NUL terminated string of no more * than 'size' bytes (including NUL). */ char * isc_string_regiondup(isc_mem_t *mctx, const isc_region_t *source); /* * Copy the region pointed to by r to a NUL terminated string * allocated from the memory context pointed to by mctx. * * The result should be deallocated using isc_mem_free() * * Requires: * 'mctx' is a point to a valid memory context. * 'source' is a pointer to a valid region. * * Returns: * a pointer to a NUL terminated string or * NULL if memory for the copy could not be allocated * */ char * isc_string_separate(char **stringp, const char *delim); #ifdef ISC_PLATFORM_NEEDSTRSEP #define strsep isc_string_separate #endif #ifdef ISC_PLATFORM_NEEDMEMMOVE #define memmove(a,b,c) bcopy(b,a,c) #endif size_t isc_string_strlcpy(char *dst, const char *src, size_t size); #ifdef ISC_PLATFORM_NEEDSTRLCPY #define strlcpy isc_string_strlcpy #endif size_t isc_string_strlcat(char *dst, const char *src, size_t size); #ifdef ISC_PLATFORM_NEEDSTRLCAT #define strlcat isc_string_strlcat #endif char * isc_string_strcasestr(const char *big, const char *little); #ifdef ISC_PLATFORM_NEEDSTRCASESTR #define strcasestr isc_string_strcasestr #endif ISC_LANG_ENDDECLS #endif /* ISC_STRING_H */