mirror of
https://github.com/radareorg/radare2.git
synced 2024-12-04 19:47:31 +00:00
ace71e8be4
- Fix string filtering * Display string references for ARM (load indirections) * Fix numeric indexing of branch references in visual mode * Display '>' char for call instructions * More work on RMeta - unscape strings to avoid \n and \t - handle correctly the 'Cs' command - Add partial documentation for the rest of 'C' commands
624 lines
12 KiB
C
624 lines
12 KiB
C
/* radare - LGPL - Copyright 2007-2010 pancake<nopcode.org> */
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#include "r_types.h"
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#include "r_util.h"
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#include <stdio.h>
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#include <ctype.h>
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#include <stdarg.h>
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/* stable code */
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static const char *nullstr = "";
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static const char *nullstr_c = "(null)";
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/* int c; ret = hex2int(&c, 'c'); */
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static int hex2int (ut8 *val, ut8 c) {
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if ('0' <= c && c <= '9') *val = (ut8)(*val) * 16 + ( c - '0');
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else if (c >= 'A' && c <= 'F') *val = (ut8)(*val) * 16 + ( c - 'A' + 10);
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else if (c >= 'a' && c <= 'f') *val = (ut8)(*val) * 16 + ( c - 'a' + 10);
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else return 1;
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return 0;
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}
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R_API int r_str_rwx(const char *str) {
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int ret = atoi (str);
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if (!ret) {
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ret |= strchr (str, 'r')?4:0;
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ret |= strchr (str, 'w')?2:0;
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ret |= strchr (str, 'x')?1:0;
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}
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return ret;
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}
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R_API const char *r_str_rwx_i(int rwx) {
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static const char *rwxstr[16] = {
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[0] = "---",
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[1] = "--x",
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[2] = "-w-",
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[3] = "-wx",
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[4] = "r--",
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[5] = "r-x",
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[6] = "rw-",
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[7] = "rwx",
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/* ... */
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};
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return rwxstr[rwx&7]; // 15 for srwx
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}
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R_API const char *r_str_bool(int b) {
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if (b) return "true";
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return "false";
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}
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R_API void r_str_case(char *str, int up) {
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if (up) {
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while(*str)
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*str = tolower (*str);
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} else {
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while(*str)
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*str = toupper (*str);
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}
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}
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#if __WINDOWS__
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#define __ENV_HOME "USERPROFILE"
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#define __ENV_DIR "\\"
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#else
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#define __ENV_HOME "HOME"
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#define __ENV_DIR "/"
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#endif
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R_API char *r_str_home(const char *str) {
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char *dst;
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const char *home = r_sys_getenv (__ENV_HOME);
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if (home == NULL)
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return NULL;
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dst = (char *)malloc (strlen (home) + strlen (str)+2);
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strcpy (dst, home);
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if (str && *str) {
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strcat (dst, __ENV_DIR);
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strcat (dst, str);
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}
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return dst;
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}
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/* XXX Fix new hash algo*/
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R_API ut64 r_str_hash64(const char *str) {
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ut64 ret = 0;
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for (;*str; str++)
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ret ^= (ret<<7 | *str);
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return ret;
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}
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R_API int r_str_hash(const char *str) {
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int ret = 0;
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for (;*str; str++)
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ret ^= (ret<<7 | *str);
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return ret;
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}
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R_API int r_str_delta(char *p, char a, char b) {
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char *_a = strchr (p, a);
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char *_b = strchr (p, b);
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return (!_a||!_b)?0:(_a-_b);
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}
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R_API int r_str_word_set0(char *str) { int i;
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char *p;
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if (str[0]=='\0')
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return 0;
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/* TODO: sync with r1 code */
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for (i=1,p=str; p[0]; p++)
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if (*p==' ') {
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i++;
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*p='\0';
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} // s/ /\0/g
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return i;
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}
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R_API char *r_str_word_get0(char *str, int idx) {
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int i;
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char *ptr = str;
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if (ptr == NULL)
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return (char *)nullstr;
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for (i=0;*ptr && i != idx;i++)
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ptr = ptr + strlen(ptr) + 1;
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return ptr;
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}
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R_API int r_str_char_count(const char *string, char ch) {
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int i, count = 0;
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for (i=0; string[i]; i++)
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if (string[i]==ch)
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count++;
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return count;
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}
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R_API int r_str_word_count(const char *string) {
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const char *text, *tmp;
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int word;
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for (text = tmp = string; *text && isseparator (*text); text++);
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for (word = 0; *text; word++) {
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for (;*text && !isseparator (*text); text++);
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for (tmp = text; *text && isseparator (*text); text++);
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if (tmp == text) word--;
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}
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return word-1;
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}
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R_API char *r_str_ichr(char *str, char chr) {
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while (*str==chr)
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str = str+1;
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return str;
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}
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R_API char *r_str_lchr(char *str, char chr) {
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int len = strlen(str)+1;
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for (;len>=0;len--)
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if (str[len]==chr)
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return str+len;
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return NULL;
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}
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R_API int r_str_nchr(const char *str, char chr) {
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int n;
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for (n = 0; *str; str++)
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if (*str==chr)
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n++;
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return n;
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}
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R_API int r_str_nstr(char *from, char *to, int size) {
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int i;
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for (i=0; i<size; i++)
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if (from==NULL || to==NULL || from[i]!=to[i])
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break;
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return (size!=i);
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}
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R_API const char *r_str_chop_ro(const char *str) {
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if (str)
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while (*str && iswhitechar (*str))
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str++;
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return str;
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}
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R_API char *r_str_new(char *str) {
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return strdup (str);
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}
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R_API char *r_str_chop(char *str) {
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int len;
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char *ptr;
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if (str == NULL)
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return NULL;
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while (*str && iswhitechar (*str))
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str = str + 1;
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len = strlen(str);
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if (len>0)
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for (ptr = str+len-1;ptr!=str;ptr = ptr - 1) {
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if (iswhitechar (ptr[0]))
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*ptr = '\0';
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else break;
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}
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return str;
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}
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R_API char *r_str_trim_head(char *str) {
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if (str == NULL)
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return NULL;
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while (*str && iswhitechar(*str))
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str++;
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return str;
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}
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R_API char *r_str_trim_tail(char *str) {
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char *ptr = str;
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if (str == NULL)
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return NULL;
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ptr += strlen(str)-1;
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while ((ptr > str) && iswhitechar(*ptr)) {
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*ptr = '\0';
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ptr--;
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}
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return str;
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}
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R_API char *r_str_trim_head_tail(char *str) {
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return r_str_trim_tail(r_str_trim_head(str));
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}
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R_API char *r_str_trim(char *str) {
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int i;
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char *ptr;
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if (str == NULL)
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return NULL;
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for (ptr=str, i=0;str[i];i++)
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if (!iswhitechar (str[i]))
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*ptr++ = str[i];
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*ptr='\0';
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return str;
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}
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/* memccmp("foo.bar", "foo.cow, '.') == 0 */
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R_API int r_str_ccmp(const char *dst, const char *src, int ch) {
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int i;
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for (i=0;src[i] && src[i] != ch; i++)
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if (dst[i] != src[i])
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return 1;
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return 0;
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}
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R_API int r_str_cmp(const char *a, const char *b, int len) {
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for (;len--;) {
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if (*a=='\0'||*b=='\0'||*a!=*b)
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return 1;
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a=a+1;
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b=b+1;
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}
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return 0;
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}
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R_API int r_str_ccpy(char *dst, char *src, int ch) {
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int i;
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for(i=0;src[i] && src[i] != ch; i++)
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dst[i] = src[i];
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dst[i] = '\0';
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return i;
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}
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R_API char *r_str_word_get_first(const char *text) {
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char *ret;
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int len = 0;
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for (;*text && isseparator (*text); text++);
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/* strdup */
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len = strlen (text);
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ret = (char *)malloc (len+1);
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if (ret == NULL) {
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eprintf ("Cannot allocate %d bytes.\n", len+1);
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exit (1);
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}
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strncpy (ret, text, len);
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ret[len]='\0';
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return ret;
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}
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R_API const char *r_str_get(const char *str) {
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if (str == NULL)
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return nullstr_c;
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return str;
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}
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R_API char *r_str_dup(char *ptr, const char *string) {
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if (ptr)
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free (ptr);
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ptr = strdup (string);
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return ptr;
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}
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// TODO: rename to r_str_dupfmt
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R_API char *r_str_dup_printf(const char *fmt, ...) {
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char *ret;
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va_list ap;
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va_start(ap, fmt);
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if ((ret = malloc (1024)) == NULL)
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return NULL;
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vsnprintf (ret, 1024, fmt, ap);
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va_end(ap);
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return ret;
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}
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R_API void r_str_writef(int fd, const char *fmt, ...) {
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char *buf;
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va_list ap;
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va_start (ap, fmt);
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if ((buf = malloc (4096)) != NULL) {
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vsnprintf (buf, 4096, fmt, ap);
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r_str_write (fd, buf);
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free (buf);
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}
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va_end (ap);
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}
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/*
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* return: the pointer ptr resized to string size.
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*/
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R_API char *r_str_concat(char *ptr, const char *string) {
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if (ptr == NULL)
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return strdup (string);
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ptr = realloc (ptr, strlen (string)+strlen (ptr)+1);
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if (ptr == NULL)
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return NULL;
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strcat (ptr, string);
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return ptr;
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}
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R_API char *r_str_concatf(char *ptr, const char *fmt, ...) {
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char string[1024];
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va_list ap;
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va_start (ap, fmt);
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vsnprintf (string, 1023, fmt, ap);
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ptr = r_str_concat (ptr, string);
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va_end (ap);
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return ptr;
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}
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R_API char *r_str_concatch(char *x, char y) {
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char b[2] = {y, 0};
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return r_str_concat (x,b);
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}
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R_API void *r_str_free(void *ptr) {
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free (ptr);
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return NULL;
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}
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R_API int r_str_inject(char *begin, char *end, char *str, int maxlen) {
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int len = strlen (end)+1;
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char *tmp;
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if (maxlen > 0 && ((strlen (begin)-(end-begin)+strlen (str)) > maxlen))
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return 0;
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tmp = malloc (len);
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memcpy (tmp, end, len);
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strcpy (begin, str);
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strcat (begin, tmp);
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free (tmp);
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return 1;
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}
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/* unstable code (taken from GNU) */
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/*------------------------------------------------*/
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// FROM bash::stringlib
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#define RESIZE_MALLOCED_BUFFER(str,cind,room,csize,sincr) \
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if ((cind) + (room) >= csize) { \
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while ((cind) + (room) >= csize) \
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csize += (sincr); \
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str = realloc (str, csize); \
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}
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/* Replace occurrences of PAT with REP in STRING. If GLOBAL is non-zero,
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replace all occurrences, otherwise replace only the first.
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This returns a new string; the caller should free it. */
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static int strsub_memcmp (char *string, char *pat, int len) {
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int res;
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for (res = 0; len-->0; pat++) {
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if (*pat!='?')
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res += *string - *pat;
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string++;
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}
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return res;
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}
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// TODO: rename r_str_replace
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R_API char *r_str_sub(char *string, char *pat, char *rep, int global) {
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int patlen, templen, tempsize, repl, i;
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char *temp, *r;
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patlen = strlen (pat);
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for (temp = (char *)NULL, i = templen = tempsize = 0, repl = 1; string[i]; ) {
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if (repl && !strsub_memcmp (string + i, pat, patlen)) {
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RESIZE_MALLOCED_BUFFER (temp, templen, patlen, tempsize, 4096); //UGLY HACK (patlen * 2));
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if (temp == NULL)
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break;
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for (r = rep; *r; )
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temp[templen++] = *r++;
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i += patlen;
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repl = (global != 0);
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} else {
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RESIZE_MALLOCED_BUFFER (temp, templen, 1, tempsize, 4096); // UGLY HACK 16);
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temp[templen++] = string[i++];
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}
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}
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if (temp)
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temp[templen] = '\0';
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return (temp);
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}
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R_API char *r_str_clean(char *str) {
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int len;
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char *ptr;
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if (str != NULL) {
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while (str[0] && iswhitechar (str[0]))
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str = str + 1;
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if ((len = strlen(str))>0)
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for (ptr = str+len-1;ptr!=str;ptr = ptr - 1) {
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if (iswhitechar (ptr[0]))
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ptr[0]='\0';
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else break;
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}
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}
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return str;
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}
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R_API int r_str_escape(char *buf) {
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unsigned char ch = 0, ch2 = 0;
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int err = 0;
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int i;
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for (i=0; buf[i]; i++) {
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// only parse scaped characters //
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if (buf[i]!='\\')
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continue;
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if (buf[i+1]=='e') {
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buf[i] = 0x1b;
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strcpy (buf+i+1, buf+i+2);
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} else if (buf[i+1]=='r') {
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buf[i] = 0x0d;
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strcpy (buf+i+1, buf+i+2);
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} else if (buf[i+1]=='n') {
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buf[i] = 0x0a;
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strcpy (buf+i+1, buf+i+2);
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} else if (buf[i+1]=='x') {
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err = ch2 = ch = 0;
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if (!buf[i+2] || !buf[i+3]) {
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eprintf ("Unexpected end of string.\n");
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return 0;
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}
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err |= hex2int (&ch, buf[i+2]);
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err |= hex2int (&ch2, buf[i+3]);
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if (err) {
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eprintf ("Incorrect hexadecimal characters for conversion.\n");
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return 0;
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}
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buf[i] = (ch<<4)+ch2;
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strcpy (buf+i+1, buf+i+4);
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} else {
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eprintf ("'\\x' expected.\n");
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return 0;
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}
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}
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return i;
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}
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R_API char *r_str_unscape(char *buf) {
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char *ptr, *ret;
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int len = strlen (buf);
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ptr = ret = malloc (len*2);
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for (;*buf;buf++,ptr++) {
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if (*buf=='\n') {
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*ptr = '\\';
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ptr++;
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*ptr = 'n';
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} else
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if (*buf=='\t') {
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*ptr = '\\';
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ptr++;
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*ptr = 't';
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} else
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if (IS_PRINTABLE(*buf)) {
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*ptr = *buf;
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} else break;
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}
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*ptr = 0;
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return ret;
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}
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/* ansi helpers */
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R_API int r_str_ansi_len(const char *str) {
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int i=0, len = 0;
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while (str[i]) {
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if (str[i]==0x1b && str[i+1]=='[')
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for (++i;str[i]&&str[i]!='J'&&str[i]!='m'&&str[i]!='H';i++);
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else len++;
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i++;
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}
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return len;
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}
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R_API const char *r_str_ansi_chrn(const char *str, int n) {
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int len, i;
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for (i=len=0; str[i] && (n!=len); i++) {
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if (str[i]==0x1b && str[i+1]=='[')
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for (++i;str[i]&&str[i]!='J'&&str[i]!='m'&&str[i]!='H';i++);
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else len++;
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}
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return str+i;
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}
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R_API void r_str_filter(char *str, int len) {
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int i;
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for (i=0; i<len; i++)
|
|
if (!IS_PRINTABLE (str[i]))
|
|
str[i] = '.';
|
|
}
|
|
|
|
#define MAXARG 128
|
|
R_API char **r_str_argv(const char *_str, int *_argc) {
|
|
int argc = 0;
|
|
int escape = 0;
|
|
int quote = 0;
|
|
char *optr, *ptr, *str = strdup (_str);
|
|
char **argv = (char **)malloc (MAXARG*sizeof(char*));
|
|
|
|
optr = ptr = (char *)r_str_chop_ro (str);
|
|
for (; *ptr && argc<MAXARG; ptr++) {
|
|
switch (*ptr) {
|
|
case '\'':
|
|
case '"':
|
|
if (escape) {
|
|
escape = 0;
|
|
strcpy (ptr, ptr+1);
|
|
} else {
|
|
if (quote) {
|
|
*ptr = '\0';
|
|
argv[argc++] = optr;
|
|
optr = ptr+1;
|
|
quote = 0;
|
|
} else {
|
|
quote = *ptr;
|
|
optr = ptr+1;
|
|
}
|
|
}
|
|
break;
|
|
case '\\':
|
|
escape = 1;
|
|
break;
|
|
case ' ':
|
|
if (!escape && !quote) {
|
|
*ptr = '\0';
|
|
if (*optr) {
|
|
argv[argc++] = optr;
|
|
optr = ptr+1;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
escape = 0;
|
|
break;
|
|
}
|
|
}
|
|
if (*optr) {
|
|
argv[argc++] = optr;
|
|
optr = ptr+1;
|
|
}
|
|
argv[argc] = NULL;
|
|
if (_argc)
|
|
*_argc = argc;
|
|
return argv;
|
|
}
|
|
|
|
R_API void r_str_argv_free(char **argv) {
|
|
// TODO: free the internal food or just the first element
|
|
// free (argv[0]); // MEMORY LEAK
|
|
free (argv);
|
|
}
|
|
|
|
|
|
#if 0
|
|
/* XXX this is necessary ??? */
|
|
// TODO: make it dynamic
|
|
static int bprintf_init = 0;
|
|
static char bprintf_buf[4096];
|
|
|
|
// XXX overflow
|
|
R_API int r_bprintf(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
if (bprintf_init==0)
|
|
*bprintf_buf = 0;
|
|
va_start(ap, fmt);
|
|
r_str_concatf(bprintf_buf, fmt, ap);
|
|
va_end(ap);
|
|
return strlen(bprintf_buf);
|
|
}
|
|
|
|
R_API char *r_bprintf_get()
|
|
{
|
|
char *s;
|
|
if (bprintf_init==0)
|
|
*bprintf_buf = 0;
|
|
s = strdup(bprintf_buf);
|
|
bprintf_buf[0]='\0';
|
|
return s;
|
|
}
|
|
#endif
|