1 /* 2 * Copyright (C) 1998,1999 Uwe Ohse 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 17 * 18 * As a special exception this source may be used as part of the 19 * SRS project by CORE/Computer Service Langenbach 20 * regardless of the copyright they choose. 21 * 22 * Contact: uwe@ohse.de 23 */ 24 #ifndef UOSTR_H 25 #define UOSTR_H 26 27 #ifndef P__ 28 #define P__(x) x 29 #endif 30 #include <stddef.h> 31 32 typedef struct uostr_t { 33 char *data; 34 size_t size; 35 size_t len; 36 } uostr_t; 37 #define UOSTR_INIT {0,0,0} /* really only care about data */ 38 39 uostr_t *uostr_alloc P__((void)); /* mallocs a uostr_t and inits with 0 */ 40 void uostr_free P__((uostr_t *)); /* free(uostr_t), after free(uostr_t->data) */ 41 void uostr_freedata P__((uostr_t *)); /* free(uostr_t->data) */ 42 void uostr_forget P__((uostr_t *)); /* get around "reusing uostr" check */ 43 extern void (*uostr_xallocfn) P__((const char *)); /* called by x-functions in case of oom */ 44 void uostr_xallocerr P__((const char *fn)); /* internal function, leave alone */ 45 46 /* be careful - if u->data is NULL then u->len and u->size need not to contain any information */ 47 /* both are boolean: 0/NULL is "error" */ 48 #define uostr_needmore(u,bytes) \ 49 (!(u)->data ? uostr_allocmore((u),(bytes)) : \ 50 (((bytes)+(u)->len>(u)->size) ? uostr_allocmore((u),(bytes)) : u)) 51 #define uostr_xneedmore(u,bytes) \ 52 (!(u)->data ? uostr_allocmore((u),(bytes)) : \ 53 (((bytes)+(u)->len>(u)->size) ? uostr_allocmore((u),(bytes)) : u)) 54 #define uostr_need(u,bytes) \ 55 (!(u)->data ? uostr_allocmore((u),(bytes)) : \ 56 (((bytes)>(u)->size) ? uostr_allocmore((u),(bytes)-(u)->size) : u)) 57 #define uostr_xneed(u,bytes) \ 58 (!((u)->data) ? uostr_allocmore((u),(bytes)) : \ 59 (((bytes)>(u)->size) ? uostr_allocmore((u),(bytes)-(u)->size) : u)) 60 uostr_t * uostr_allocmore P__((uostr_t *u, size_t bytes)); 61 uostr_t * uostr_xallocmore P__((uostr_t *u, size_t bytes)); 62 63 #define UOSTR_EMPTY(x) ((x)->data?(x)->len==0:1) 64 #define UOSTR_EMPTY0(x) ((x)->data?(x)->len==1 && (x)->data[0]==0? 1: (x)->len==0 ? 1 : 0 : 1) 65 66 67 #define uostr_0(u) uostr_add_char(u,0) 68 #define uostr_x0(u) uostr_xadd_char(u,0) 69 70 uostr_t *uostr_dup_cstr P__((uostr_t *,const char *)); /* strdup */ 71 uostr_t *uostr_dup_cstrmulti P__((uostr_t *u,...)); /* dup first, concat rest */ 72 uostr_t *uostr_dup_char P__((uostr_t *,const char)); /* char2uostr_t */ 73 uostr_t *uostr_dup_uostr P__((uostr_t *,const uostr_t *)); 74 uostr_t *uostr_dup_mem P__((uostr_t *,const char *, size_t len)); /* */ 75 uostr_t *uostr_add_cstr P__((uostr_t *,const char *)); /* */ 76 uostr_t *uostr_add_cstrmulti P__((uostr_t *u,...)); 77 uostr_t *uostr_add_char P__((uostr_t *,const char)); /* */ 78 uostr_t *uostr_add_uostr P__((uostr_t *,const uostr_t *)); /* */ 79 uostr_t *uostr_add_mem P__((uostr_t *,const char *, size_t len)); /* */ 80 81 uostr_t *uostr_xdup_cstr P__((uostr_t *,const char *)); /* strdup */ 82 uostr_t *uostr_xdup_cstrmulti P__((uostr_t *u,...)); /* dup first, concat rest */ 83 uostr_t *uostr_xdup_char P__((uostr_t *,const char)); /* char2uostr_t */ 84 uostr_t *uostr_xdup_uostr P__((uostr_t *,const uostr_t *)); 85 uostr_t *uostr_xdup_mem P__((uostr_t *,const char *, size_t len)); /* */ 86 uostr_t *uostr_xadd_cstr P__((uostr_t *,const char *)); /* */ 87 uostr_t *uostr_xadd_cstrmulti P__((uostr_t *u,...)); 88 uostr_t *uostr_xadd_char P__((uostr_t *,const char)); /* */ 89 uostr_t *uostr_xadd_uostr P__((uostr_t *,const uostr_t *)); /* */ 90 uostr_t *uostr_xadd_mem P__((uostr_t *,const char *, size_t len)); /* */ 91 92 uostr_t *uostr_cut P__((uostr_t *,long new_len)); /* !!! long, may be negativ (cut by -x chars) */ 93 #define uostr_fcut(u) do {(u)->len=0; if ((u)->data) (u)->data[0]='Z';} while(0) 94 95 96 #endif 97