ref: 3c9d5b05d6984ba912a27552e9a5b34db77abc57
dir: /src/asm/util.c/
/* * This file is part of RGBDS. * * Copyright (c) 1997-2019, Carsten Sorensen and RGBDS contributors. * * SPDX-License-Identifier: MIT */ #include <ctype.h> #include <stdint.h> #include "asm/main.h" #include "asm/util.h" #include "asm/warning.h" #include "extern/utf8decoder.h" char const *printChar(int c) { // "'A'" + '\0': 4 bytes // "'\\n'" + '\0': 5 bytes // "0xFF" + '\0': 5 bytes static char buf[5]; if (c == EOF) return "EOF"; if (isprint(c)) { buf[0] = '\''; buf[1] = c; buf[2] = '\''; buf[3] = '\0'; return buf; } switch (c) { case '\n': buf[2] = 'n'; break; case '\r': buf[2] = 'r'; break; case '\t': buf[2] = 't'; break; default: /* Print as hex */ buf[0] = '0'; buf[1] = 'x'; snprintf(&buf[2], 3, "%02hhX", (uint8_t)c); // includes the '\0' return buf; } buf[0] = '\''; buf[1] = '\\'; buf[3] = '\''; buf[4] = '\0'; return buf; } size_t readUTF8Char(uint8_t *dest, char const *src) { uint32_t state = 0; uint32_t codep; size_t i = 0; for (;;) { if (decode(&state, &codep, src[i]) == 1) return 0; if (dest) dest[i] = src[i]; i++; if (state == 0) return i; } }