(C) An X-Ryl669 project 2007
This document describes Unlimited Zooming Interface source code. UZI stands for Unlimited Zooming Interface, and source code license is
00001 /* 00002 * This source file is part of the bstring string library. This code was 00003 * written by Paul Hsieh in 2002-2006, and is covered by the BSD open source 00004 * license. Refer to the accompanying documentation for details on usage and 00005 * license. 00006 */ 00007 00008 /* 00009 * bstrlib.c 00010 * 00011 * This file is the core module for implementing the bstring functions. 00012 */ 00013 00014 #ifndef BSTRLIB_INCLUDE 00015 #define BSTRLIB_INCLUDE 00016 00017 #ifdef __cplusplus 00018 extern "C" { 00019 #endif 00020 00021 #include <stdarg.h> 00022 #include <string.h> 00023 #include <limits.h> 00024 00025 #if !defined (BSTRLIB_VSNP_OK) && !defined (BSTRLIB_NOVSNP) 00026 # if defined (__TURBOC__) && !defined (__BORLANDC__) 00027 # define BSTRLIB_NOVSNP 00028 # endif 00029 #endif 00030 00031 #define BSTR_ERR (-1) 00032 #define BSTR_OK (0) 00033 #define BSTR_BS_BUFF_LENGTH_GET (0) 00034 00035 typedef struct tagbstring * bstring; 00036 00037 /* Copy functions */ 00038 #define cstr2bstr bfromcstr 00039 extern bstring bfromcstr (const char * str); 00040 extern bstring bfromcstralloc (int mlen, const char * str); 00041 extern bstring blk2bstr (const void * blk, int len); 00042 extern char * bstr2cstr (const bstring s, char z); 00043 extern int bcstrfree (char * s); 00044 extern bstring bstrcpy (const bstring b1); 00045 extern int bassign (bstring a, const bstring b); 00046 extern int bassignmidstr (bstring a, const bstring b, int left, int len); 00047 00048 /* Destroy function */ 00049 extern int bdestroy (bstring b); 00050 00051 /* Space allocation hinting function */ 00052 extern int balloc (bstring s, int len); 00053 00054 /* Substring extraction */ 00055 extern bstring bmidstr (const bstring b, int left, int len); 00056 00057 /* Various standard manipulations */ 00058 extern int bconcat (bstring b0, const bstring b1); 00059 extern int bconchar (bstring b0, char c); 00060 extern int bcatcstr (bstring b, const char * s); 00061 extern int bcatblk (bstring b, const unsigned char * s, int len); 00062 extern int binsert (bstring s1, int pos, const bstring s2, unsigned char fill); 00063 extern int binsertch (bstring s1, int pos, int len, unsigned char fill); 00064 extern int breplace (bstring b1, int pos, int len, const bstring b2, unsigned char fill); 00065 extern int bdelete (bstring s1, int pos, int len); 00066 extern int bsetstr (bstring b0, int pos, const bstring b1, unsigned char fill); 00067 extern int btrunc (bstring b, int n); 00068 00069 /* Scan/search functions */ 00070 extern int bstricmp (const bstring b0, const bstring b1); 00071 extern int bstrnicmp (const bstring b0, const bstring b1, int n); 00072 extern int biseqcaseless (const bstring b0, const bstring b1); 00073 extern int bisstemeqcaselessblk (const bstring b0, const void * blk, int len); 00074 extern int biseq (const bstring b0, const bstring b1); 00075 extern int bisstemeqblk (const bstring b0, const void * blk, int len); 00076 extern int biseqcstr (const bstring b, const char * s); 00077 extern int biseqcstrcaseless (const bstring b, const char * s); 00078 extern int bstrcmp (const bstring b0, const bstring b1); 00079 extern int bstrncmp (const bstring b0, const bstring b1, int n); 00080 extern int binstr (const bstring s1, int pos, const bstring s2); 00081 extern int binstrr (const bstring s1, int pos, const bstring s2); 00082 extern int binstrcaseless (const bstring s1, int pos, const bstring s2); 00083 extern int binstrrcaseless (const bstring s1, int pos, const bstring s2); 00084 extern int bstrchrp (const bstring b, int c, int pos); 00085 extern int bstrrchrp (const bstring b, int c, int pos); 00086 #define bstrchr(b,c) bstrchrp ((b), (c), 0) 00087 #define bstrrchr(b,c) bstrrchrp ((b), (c), blength(b)-1) 00088 extern int binchr (const bstring b0, int pos, const bstring b1); 00089 extern int binchrr (const bstring b0, int pos, const bstring b1); 00090 extern int bninchr (const bstring b0, int pos, const bstring b1); 00091 extern int bninchrr (const bstring b0, int pos, const bstring b1); 00092 extern int bfindreplace (bstring b, const bstring find, const bstring repl, int pos); 00093 extern int bfindreplacecaseless (bstring b, const bstring find, const bstring repl, int pos); 00094 00095 struct bstrList { 00096 int qty; 00097 bstring entry[1]; 00098 }; 00099 00100 /* String split and join functions */ 00101 extern struct bstrList * bsplit (const bstring str, unsigned char splitChar); 00102 extern struct bstrList * bsplits (const bstring str, const bstring splitStr); 00103 extern bstring bjoin (const struct bstrList * bl, const bstring sep); 00104 extern int bstrListDestroy (struct bstrList * sl); 00105 extern int bsplitcb (const bstring str, unsigned char splitChar, int pos, 00106 int (* cb) (void * parm, int ofs, int len), void * parm); 00107 extern int bsplitscb (const bstring str, const bstring splitStr, int pos, 00108 int (* cb) (void * parm, int ofs, int len), void * parm); 00109 00110 /* Miscellaneous functions */ 00111 extern int bpattern (bstring b, int len); 00112 extern int btoupper (bstring b); 00113 extern int btolower (bstring b); 00114 extern int bltrimws (bstring b); 00115 extern int brtrimws (bstring b); 00116 extern int btrimws (bstring b); 00117 00118 #if !defined (BSTRLIB_NOVSNP) 00119 extern bstring bformat (const char * fmt, ...); 00120 extern int bformata (bstring b, const char * fmt, ...); 00121 extern int bassignformat (bstring b, const char * fmt, ...); 00122 #endif 00123 00124 typedef int (*bNgetc) (void *parm); 00125 typedef size_t (* bNread) (void *buff, size_t elsize, size_t nelem, void *parm); 00126 00127 /* Input functions */ 00128 extern bstring bgets (bNgetc getcPtr, void * parm, char terminator); 00129 extern bstring bread (bNread readPtr, void * parm); 00130 extern int bgetsa (bstring b, bNgetc getcPtr, void * parm, char terminator); 00131 extern int bassigngets (bstring b, bNgetc getcPtr, void * parm, char terminator); 00132 extern int breada (bstring b, bNread readPtr, void * parm); 00133 00134 /* Stream functions */ 00135 extern struct bStream * bsopen (bNread readPtr, void * parm); 00136 extern void * bsclose (struct bStream * s); 00137 extern int bsbufflength (struct bStream * s, int sz); 00138 extern int bsreadln (bstring b, struct bStream * s, char terminator); 00139 extern int bsreadlns (bstring r, struct bStream * s, const bstring term); 00140 extern int bsread (bstring b, struct bStream * s, int n); 00141 extern int bsreadlna (bstring b, struct bStream * s, char terminator); 00142 extern int bsreadlnsa (bstring r, struct bStream * s, const bstring term); 00143 extern int bsreada (bstring b, struct bStream * s, int n); 00144 extern int bsunread (struct bStream * s, const bstring b); 00145 extern int bspeek (bstring r, const struct bStream * s); 00146 extern int bssplitscb (struct bStream * s, const bstring splitStr, 00147 int (* cb) (void * parm, int ofs, const bstring entry), void * parm); 00148 extern int bseof (const struct bStream * s); 00149 00150 struct tagbstring { 00151 int mlen; 00152 int slen; 00153 unsigned char * data; 00154 }; 00155 00156 /* Accessor macros */ 00157 #define blengthe(b, e) (((b) == (void *)0 || (b)->slen < 0) ? (int)(e) : ((b)->slen)) 00158 #define blength(b) (blengthe ((b), 0)) 00159 #define bdataofse(b, o, e) (((b) == (void *)0 || (b)->data == (void*)0) ? (unsigned char *)(e) : ((b)->data) + (o)) 00160 #define bdataofs(b, o) (bdataofse ((b), (o), (void *)0)) 00161 #define bdatae(b, e) (bdataofse (b, 0, e)) 00162 #define bdata(b) (bdataofs (b, 0)) 00163 #define bchare(b, p, e) ((((unsigned)(p)) < (unsigned)blength(b)) ? ((b)->data[(p)]) : (e)) 00164 #define bchar(b, p) bchare ((b), (p), '\0') 00165 00166 /* Static constant string initialization macro */ 00167 #if defined(_MSC_VER) && defined(_DEBUG) 00168 # if _MSC_VER <= 1310 00169 # define bsStatic(q) {-32, (int) sizeof(q)-1, (unsigned char *) ("" q "")} 00170 # endif 00171 #endif 00172 #ifndef bsStatic 00173 # define bsStatic(q) {-__LINE__, (int) sizeof(q)-1, (unsigned char *) ("" q "")} 00174 #endif 00175 00176 /* Static constant block parameter pair */ 00177 #define bsStaticBlkParms(q) ((void *)("" q "")), ((int) sizeof(q)-1) 00178 00179 /* Reference building macros */ 00180 #define cstr2tbstr btfromcstr 00181 #define btfromcstr(t,s) { \ 00182 (t).data = (unsigned char *) (s); \ 00183 (t).slen = ((t).data) ? ((int) (strlen) ((char *)(t).data)) : 0; \ 00184 (t).mlen = -1; \ 00185 } 00186 #define blk2tbstr(t,s,l) { \ 00187 (t).slen = l; \ 00188 (t).mlen = -1; \ 00189 (t).data = (unsigned char *) (s); \ 00190 } 00191 #define bmid2tbstr(t,b,p,l) { \ 00192 bstring bstrtmp_s = (b); \ 00193 if (bstrtmp_s && bstrtmp_s->data && bstrtmp_s->slen >= 0) { \ 00194 int bstrtmp_left = (p); \ 00195 int bstrtmp_len = (l); \ 00196 if (bstrtmp_left < 0) { \ 00197 bstrtmp_len += bstrtmp_left; \ 00198 bstrtmp_left = 0; \ 00199 } \ 00200 if (bstrtmp_len > bstrtmp_s->slen - bstrtmp_left) \ 00201 bstrtmp_len = bstrtmp_s->slen - bstrtmp_left; \ 00202 if (bstrtmp_len <= 0) { \ 00203 (t).data = (unsigned char *)""; \ 00204 (t).slen = 0; \ 00205 } else { \ 00206 (t).data = bstrtmp_s->data + bstrtmp_left; \ 00207 (t).slen = bstrtmp_len; \ 00208 } \ 00209 } else { \ 00210 (t).data = (unsigned char *)""; \ 00211 (t).slen = 0; \ 00212 } \ 00213 (t).mlen = -__LINE__; \ 00214 } 00215 00216 /* Write protection macros */ 00217 #define bwriteprotect(t) { if ((t).mlen >= 0) (t).mlen = -1; } 00218 #define bwriteallow(t) { if ((t).mlen == -1) (t).mlen = (t).slen + ((t).slen == 0); } 00219 #define biswriteprotected(t) ((t).mlen <= 0) 00220 00221 #ifdef __cplusplus 00222 } 00223 #endif 00224 00225 #endif