1 /* 2 * Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers. 3 * All rights reserved. 4 * 5 * By using this file, you agree to the terms and conditions set 6 * forth in the LICENSE file which can be found at the top level of 7 * the sendmail distribution. 8 */ 9 10 #include <sm/gen.h> 11 SM_RCSID("@(#)$Id: stringf.c,v 1.13 2001/03/03 03:40:43 ca Exp $") 12 #include <errno.h> 13 #include <stdio.h> 14 #include <sm/exc.h> 15 #include <sm/heap.h> 16 #include <sm/string.h> 17 #include <sm/varargs.h> 18 19 /* 20 ** SM_STRINGF_X -- printf() to dynamically allocated string. 21 ** 22 ** Takes the same arguments as printf. 23 ** It returns a pointer to a dynamically allocated string 24 ** containing the text that printf would print to standard output. 25 ** It raises an exception on error. 26 ** The name comes from a PWB Unix function called stringf. 27 ** 28 ** Parameters: 29 ** fmt -- format string. 30 ** ... -- arguments for format. 31 ** 32 ** Returns: 33 ** Pointer to a dynamically allocated string. 34 ** 35 ** Exceptions: 36 ** F:sm_heap -- out of memory (via sm_vstringf_x()). 37 */ 38 39 char * 40 #if SM_VA_STD 41 sm_stringf_x(const char *fmt, ...) 42 #else /* SM_VA_STD */ 43 sm_stringf_x(fmt, va_alist) 44 const char *fmt; 45 va_dcl 46 #endif /* SM_VA_STD */ 47 { 48 SM_VA_LOCAL_DECL 49 char *s; 50 51 SM_VA_START(ap, fmt); 52 s = sm_vstringf_x(fmt, ap); 53 SM_VA_END(ap); 54 return s; 55 } 56 57 /* 58 ** SM_VSTRINGF_X -- printf() to dynamically allocated string. 59 ** 60 ** Parameters: 61 ** fmt -- format string. 62 ** ap -- arguments for format. 63 ** 64 ** Returns: 65 ** Pointer to a dynamically allocated string. 66 ** 67 ** Exceptions: 68 ** F:sm_heap -- out of memory 69 */ 70 71 char * 72 sm_vstringf_x(fmt, ap) 73 const char *fmt; 74 SM_VA_LOCAL_DECL 75 { 76 char *s; 77 78 sm_vasprintf(&s, fmt, ap); 79 if (s == NULL) 80 { 81 if (errno == ENOMEM) 82 sm_exc_raise_x(&SmHeapOutOfMemory); 83 sm_exc_raisenew_x(&SmEtypeOs, errno, "sm_vasprintf", NULL); 84 } 85 return s; 86 } 87