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      1 #include "tests.h"
      2 
      3 #include <stdio.h>
      4 #include <stdlib.h>
      5 #include <string.h>
      6 
      7 /*
      8  * Based on string_quote() from util.c.
      9  * Assumes instr is NUL-terminated.
     10  */
     11 
     12 void
     13 print_quoted_string(const char *instr)
     14 {
     15 	print_quoted_memory(instr, strlen(instr));
     16 }
     17 
     18 void
     19 print_quoted_memory(const char *instr, const size_t len)
     20 {
     21 	const unsigned char *str = (const unsigned char *) instr;
     22 	size_t i;
     23 
     24 	for (i = 0; i < len; ++i) {
     25 		const int c = str[i];
     26 		switch (c) {
     27 			case '\"':
     28 				printf("\\\"");
     29 				break;
     30 			case '\\':
     31 				printf("\\\\");
     32 				break;
     33 			case '\f':
     34 				printf("\\f");
     35 				break;
     36 			case '\n':
     37 				printf("\\n");
     38 				break;
     39 			case '\r':
     40 				printf("\\r");
     41 				break;
     42 			case '\t':
     43 				printf("\\t");
     44 				break;
     45 			case '\v':
     46 				printf("\\v");
     47 				break;
     48 			default:
     49 				if (c >= ' ' && c <= 0x7e)
     50 					putchar(c);
     51 				else {
     52 					putchar('\\');
     53 
     54 					char c1 = '0' + (c & 0x7);
     55 					char c2 = '0' + ((c >> 3) & 0x7);
     56 					char c3 = '0' + (c >> 6);
     57 
     58 					if (*str >= '0' && *str <= '9') {
     59 						/* Print \octal */
     60 						putchar(c3);
     61 						putchar(c2);
     62 					} else {
     63 						/* Print \[[o]o]o */
     64 						if (c3 != '0')
     65 							putchar(c3);
     66 						if (c3 != '0' || c2 != '0')
     67 							putchar(c2);
     68 					}
     69 					putchar(c1);
     70 				}
     71 				break;
     72 		}
     73 	}
     74 
     75 }
     76