85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/*epicsString.c*/
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/*Authors: Jun-ichi Odagiri and Marty Kraimer*/
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/*****************************************************************
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COPYRIGHT NOTIFICATION
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*****************************************************************
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(C) COPYRIGHT 1993 UNIVERSITY OF CHICAGO
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This software was developed under a United States Government license
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described on the COPYRIGHT_UniversityOfChicago file included as part
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of this distribution.
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**********************************************************************/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <limits.h>
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#include <errno.h>
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#include <ctype.h>
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int dbTranslateEscape(char *to, const char *from)
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{
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const char *pfrom = from;
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char *pto = to;
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char c;
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int nto=0;
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while( (c = *pfrom++ ) ){
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if(c=='\\') {
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switch( *pfrom ){
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case 'a': pfrom++; *pto++ = '\a' ; nto++; break;
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case 'b': pfrom++; *pto++ = '\b' ; nto++; break;
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case 'f': pfrom++; *pto++ = '\f' ; nto++; break;
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case 'n': pfrom++; *pto++ = '\n' ; nto++; break;
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case 'r': pfrom++; *pto++ = '\r' ; nto++; break;
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case 't': pfrom++; *pto++ = '\t' ; nto++; break;
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case 'v': pfrom++; *pto++ = '\v' ; nto++; break;
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case '\\': pfrom++; *pto++ = '\\' ; nto++; break;
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case '\?': pfrom++; *pto++ = '\?' ; nto++; break;
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case '\'': pfrom++; *pto++ = '\'' ; nto++; break;
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case '\"': pfrom++; *pto++ = '\"' ; nto++; break;
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case '0' :case '1' :case '2' :case '3' :
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case '4' :case '5' :case '6' :case '7' :
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{
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int i;
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char strval[4] = {0,0,0,0};
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int ival;
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unsigned char *pchar;
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for(i=0; i<3; i++) {
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if((*pfrom < '0') || (*pfrom > '7')) break;
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strval[i] = *pfrom++;
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}
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sscanf(strval,"%o",&ival);
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pchar = (unsigned char *)(pto++); nto++;
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*pchar = (unsigned char)(ival);
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}
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break;
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case 'x' :
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{
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int i;
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char strval[3] = {0,0,0};
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int ival;
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unsigned char *pchar;
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pfrom++; /*skip the x*/
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for(i=0; i<2; i++) {
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if(!isxdigit(*pfrom)) break;
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strval[i] = *pfrom++;
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}
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sscanf(strval,"%x",&ival);
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pchar = (unsigned char *)(pto++); nto++;
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*pchar = (unsigned char)(ival);
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}
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break;
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default:
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*pto++ = *pfrom++;
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}
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} else {
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*pto++ = c; nto++;
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}
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}
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*pto = '\0'; /*NOTE that nto does not have to be incremented*/
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return(nto);
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}
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