107 lines
2.7 KiB
C
107 lines
2.7 KiB
C
/* File: misc.h
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*
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* Description: See "misc.c"
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*
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* Comments: See "readme.txt" for copyright and license information.
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*
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*/
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#ifndef __MISC_H__
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#define __MISC_H__
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#include <stdio.h>
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#ifndef WIN32
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#include <unistd.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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size_t strncpy_null(char *dst, const char *src, ssize_t len);
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#ifndef HAVE_STRLCAT
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size_t strlcat(char *, const char *, size_t);
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#endif /* HAVE_STRLCAT */
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int snprintfcat(char *buf, size_t size, const char *format, ...) __attribute__((format(PG_PRINTF_ATTRIBUTE,3,4)));
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size_t snprintf_len(char *buf, size_t size, const char *format, ...);
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char *my_trim(char *string);
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char *make_string(const SQLCHAR *s, SQLINTEGER len, char *buf, size_t bufsize);
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char *quote_table(const pgNAME schema, const pgNAME table, char *buf, int nuf_size);
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#define GET_SCHEMA_NAME(nspname) (nspname)
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/* defines for return value of my_strcpy */
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#define STRCPY_SUCCESS 1
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#define STRCPY_FAIL 0
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#define STRCPY_TRUNCATED (-1)
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#define STRCPY_NULL (-2)
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ssize_t my_strcpy(char *dst, ssize_t dst_len, const char *src, ssize_t src_len);
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/*
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* Macros to safely strcpy, strcat or sprintf to fixed arrays.
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*
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*/
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/*
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* With GCC, the macro CHECK_NOT_CHAR_P() causes a compilation error
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* when the target is pointer not a fixed array.
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*/
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#if ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406
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#define FUNCTION_BEGIN_MACRO ({
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#define FUNCTION_END_MACRO ;})
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#define CHECK_NOT_CHAR_P(t) \
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_Pragma ("GCC diagnostic push") \
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_Pragma ("GCC diagnostic ignored \"-Wunused-variable\"") \
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if (0) { typeof(t) dummy_for_check = {};} \
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_Pragma ("GCC diagnostic pop")
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#else
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#define FUNCTION_BEGIN_MACRO
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#define FUNCTION_END_MACRO
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#define CHECK_NOT_CHAR_P(t)
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#endif
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/* macro to safely strcpy() to fixed arrays. */
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#define STRCPY_FIXED(to, from) \
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FUNCTION_BEGIN_MACRO \
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CHECK_NOT_CHAR_P(to) \
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strncpy_null((to), (from), sizeof(to)) \
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FUNCTION_END_MACRO
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/* macro to safely strcat() to fixed arrays. */
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#define STRCAT_FIXED(to, from) \
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FUNCTION_BEGIN_MACRO \
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CHECK_NOT_CHAR_P(to) \
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strlcat((to), (from), sizeof(to)) \
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FUNCTION_END_MACRO
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#pragma GCC diagnostic push
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/* macro to safely sprintf() to fixed arrays. */
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#define SPRINTF_FIXED(to, ...) \
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FUNCTION_BEGIN_MACRO \
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CHECK_NOT_CHAR_P(to) \
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snprintf((to), sizeof(to), __VA_ARGS__) \
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FUNCTION_END_MACRO
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#pragma GCC diagnostic pop
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/* macro to safely sprintf() & cat to fixed arrays. */
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#define SPRINTFCAT_FIXED(to, ...) \
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FUNCTION_BEGIN_MACRO \
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CHECK_NOT_CHAR_P(to) \
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snprintfcat((to), sizeof(to), __VA_ARGS__) \
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FUNCTION_END_MACRO
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#define ITOA_FIXED(to, from) \
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FUNCTION_BEGIN_MACRO \
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CHECK_NOT_CHAR_P(to) \
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snprintf((to), sizeof(to), "%d", from) \
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FUNCTION_END_MACRO
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#ifdef __cplusplus
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}
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#endif
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#endif /* __MISC_H__ */
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