55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/* Common functions and includes for our test programs. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include <stdarg.h>
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#include "../utf8proc.h"
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size_t lineno = 0;
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void check(int cond, const char *format, ...)
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{
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if (!cond) {
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va_list args;
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fprintf(stderr, "line %zd: ", lineno);
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va_start(args, format);
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vfprintf(stderr, format, args);
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va_end(args);
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fprintf(stderr, "\n");
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exit(1);
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}
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}
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size_t skipspaces(const char *buf, size_t i)
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{
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while (isspace(buf[i])) ++i;
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return i;
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}
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/* if buf points to a sequence of codepoints encoded as hexadecimal strings,
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separated by whitespace, and terminated by any character not in
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[0-9a-fA-F] or whitespace, then stores the corresponding utf8 string
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in dest, returning the number of bytes read from buf */
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utf8proc_ssize_t unsafe_encode_char(utf8proc_int32_t uc, utf8proc_uint8_t *dst);
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size_t encode(char *dest, const char *buf)
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{
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size_t i = 0, j, d = 0;
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for (;;) {
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int c;
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i = skipspaces(buf, i);
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for (j=i; buf[j] && strchr("0123456789abcdef", tolower(buf[j])); ++j)
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; /* find end of hex input */
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if (j == i) { /* no codepoint found */
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dest[d] = 0; /* NUL-terminate destination string */
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return i + 1;
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}
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check(sscanf(buf + i, "%x", (unsigned int *)&c) == 1, "invalid hex input %s", buf+i);
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i = j; /* skip to char after hex input */
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d += unsafe_encode_char(c, (utf8proc_uint8_t *) (dest + d));
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}
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}
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