diff options
Diffstat (limited to 'py/vstr.c')
| -rw-r--r-- | py/vstr.c | 40 |
1 files changed, 38 insertions, 2 deletions
@@ -29,8 +29,8 @@ #include <stdarg.h> #include <string.h> #include <assert.h> -#include "misc.h" #include "mpconfig.h" +#include "misc.h" // returned value is always at least 1 greater than argument #define ROUND_ALLOC(a) (((a) & ((~0) - 7)) + 8) @@ -199,12 +199,48 @@ void vstr_add_byte(vstr_t *vstr, byte b) { } void vstr_add_char(vstr_t *vstr, unichar c) { - // TODO UNICODE +#if MICROPY_PY_BUILTINS_STR_UNICODE + // TODO: Can this be simplified and deduplicated? + // Is it worth just calling vstr_add_len(vstr, 4)? + if (c < 0x80) { + byte *buf = (byte*)vstr_add_len(vstr, 1); + if (buf == NULL) { + return; + } + *buf = (byte)c; + } else if (c < 0x800) { + byte *buf = (byte*)vstr_add_len(vstr, 2); + if (buf == NULL) { + return; + } + buf[0] = (c >> 6) | 0xC0; + buf[1] = (c & 0x3F) | 0x80; + } else if (c < 0x10000) { + byte *buf = (byte*)vstr_add_len(vstr, 3); + if (buf == NULL) { + return; + } + buf[0] = (c >> 12) | 0xE0; + buf[1] = ((c >> 6) & 0x3F) | 0x80; + buf[2] = (c & 0x3F) | 0x80; + } else { + assert(c < 0x110000); + byte *buf = (byte*)vstr_add_len(vstr, 4); + if (buf == NULL) { + return; + } + buf[0] = (c >> 18) | 0xF0; + buf[1] = ((c >> 12) & 0x3F) | 0x80; + buf[2] = ((c >> 6) & 0x3F) | 0x80; + buf[3] = (c & 0x3F) | 0x80; + } +#else byte *buf = (byte*)vstr_add_len(vstr, 1); if (buf == NULL) { return; } buf[0] = c; +#endif } void vstr_add_str(vstr_t *vstr, const char *str) { |