/* PDCurses */ #include /*man-start************************************************************** util ---- ### Synopsis char *unctrl(chtype c); void filter(void); void use_env(bool x); int delay_output(int ms); int getcchar(const cchar_t *wcval, wchar_t *wch, attr_t *attrs, short *color_pair, void *opts); int setcchar(cchar_t *wcval, const wchar_t *wch, const attr_t attrs, short color_pair, const void *opts); wchar_t *wunctrl(cchar_t *wc); int PDC_mbtowc(wchar_t *pwc, const char *s, size_t n); size_t PDC_mbstowcs(wchar_t *dest, const char *src, size_t n); size_t PDC_wcstombs(char *dest, const wchar_t *src, size_t n); ### Description unctrl() expands the text portion of the chtype c into a printable string. Control characters are changed to the "^X" notation; others are passed through. wunctrl() is the wide-character version of the function. filter() and use_env() are no-ops in PDCurses. delay_output() inserts an ms millisecond pause in output. getcchar() works in two modes: When wch is not NULL, it reads the cchar_t pointed to by wcval and stores the attributes in attrs, the color pair in color_pair, and the text in the wide-character string wch. When wch is NULL, getcchar() merely returns the number of wide characters in wcval. In either mode, the opts argument is unused. setcchar constructs a cchar_t at wcval from the wide-character text at wch, the attributes in attr and the color pair in color_pair. The opts argument is unused. Currently, the length returned by getcchar() is always 1 or 0. Similarly, setcchar() will only take the first wide character from wch, and ignore any others that it "should" take (i.e., combining characters). Nor will it correctly handle any character outside the basic multilingual plane (UCS-2). ### Return Value wunctrl() returns NULL on failure. delay_output() always returns OK. getcchar() returns the number of wide characters wcval points to when wch is NULL; when it's not, getcchar() returns OK or ERR. setcchar() returns OK or ERR. ### Portability X/Open ncurses NetBSD unctrl Y Y Y filter Y Y Y use_env Y Y Y delay_output Y Y Y getcchar Y Y Y setcchar Y Y Y wunctrl Y Y Y PDC_mbtowc - - - PDC_mbstowcs - - - PDC_wcstombs - - - **man-end****************************************************************/ #include #include char *unctrl(chtype c) { static char strbuf[3] = {0, 0, 0}; chtype ic; PDC_LOG(("unctrl() - called\n")); ic = c & A_CHARTEXT; if (ic >= 0x20 && ic != 0x7f) /* normal characters */ { strbuf[0] = (char)ic; strbuf[1] = '\0'; return strbuf; } strbuf[0] = '^'; /* '^' prefix */ if (ic == 0x7f) /* 0x7f == DEL */ strbuf[1] = '?'; else /* other control */ strbuf[1] = (char)(ic + '@'); return strbuf; } void filter(void) { PDC_LOG(("filter() - called\n")); } void use_env(bool x) { PDC_LOG(("use_env() - called: x %d\n", x)); } int delay_output(int ms) { PDC_LOG(("delay_output() - called: ms %d\n", ms)); return napms(ms); } #ifdef PDC_WIDE int getcchar(const cchar_t *wcval, wchar_t *wch, attr_t *attrs, short *color_pair, void *opts) { if (!wcval) return ERR; if (wch) { if (!attrs || !color_pair) return ERR; *wch = (*wcval & A_CHARTEXT); *attrs = (*wcval & (A_ATTRIBUTES & ~A_COLOR)); *color_pair = PAIR_NUMBER(*wcval & A_COLOR); if (*wch) *++wch = L'\0'; return OK; } else return ((*wcval & A_CHARTEXT) != L'\0'); } int setcchar(cchar_t *wcval, const wchar_t *wch, const attr_t attrs, short color_pair, const void *opts) { if (!wcval || !wch) return ERR; *wcval = *wch | attrs | COLOR_PAIR(color_pair); return OK; } wchar_t *wunctrl(cchar_t *wc) { static wchar_t strbuf[3] = {0, 0, 0}; cchar_t ic; PDC_LOG(("wunctrl() - called\n")); if (!wc) return NULL; ic = *wc & A_CHARTEXT; if (ic >= 0x20 && ic != 0x7f) /* normal characters */ { strbuf[0] = (wchar_t)ic; strbuf[1] = L'\0'; return strbuf; } strbuf[0] = '^'; /* '^' prefix */ if (ic == 0x7f) /* 0x7f == DEL */ strbuf[1] = '?'; else /* other control */ strbuf[1] = (wchar_t)(ic + '@'); return strbuf; } int PDC_mbtowc(wchar_t *pwc, const char *s, size_t n) { # ifdef PDC_FORCE_UTF8 wchar_t key; int i = -1; const unsigned char *string; if (!s || (n < 1)) return -1; if (!*s) return 0; string = (const unsigned char *)s; key = string[0]; /* Simplistic UTF-8 decoder -- only does the BMP, minimal validation */ if (key & 0x80) { if ((key & 0xe0) == 0xc0) { if (1 < n) { key = ((key & 0x1f) << 6) | (string[1] & 0x3f); i = 2; } } else if ((key & 0xe0) == 0xe0) { if (2 < n) { key = ((key & 0x0f) << 12) | ((string[1] & 0x3f) << 6) | (string[2] & 0x3f); i = 3; } } } else i = 1; if (i) *pwc = key; return i; # else return mbtowc(pwc, s, n); # endif } size_t PDC_mbstowcs(wchar_t *dest, const char *src, size_t n) { # ifdef PDC_FORCE_UTF8 size_t i = 0, len; if (!src || !dest) return 0; len = strlen(src); while (*src && i < n) { int retval = PDC_mbtowc(dest + i, src, len); if (retval < 1) return -1; src += retval; len -= retval; i++; } # else size_t i = mbstowcs(dest, src, n); # endif dest[i] = 0; return i; } size_t PDC_wcstombs(char *dest, const wchar_t *src, size_t n) { # ifdef PDC_FORCE_UTF8 size_t i = 0; if (!src || !dest) return 0; while (*src && i < n) { chtype code = *src++; if (code < 0x80) { dest[i] = code; i++; } else if (code < 0x800) { dest[i] = ((code & 0x07c0) >> 6) | 0xc0; dest[i + 1] = (code & 0x003f) | 0x80; i += 2; } else { dest[i] = ((code & 0xf000) >> 12) | 0xe0; dest[i + 1] = ((code & 0x0fc0) >> 6) | 0x80; dest[i + 2] = (code & 0x003f) | 0x80; i += 3; } } # else size_t i = wcstombs(dest, src, n); # endif dest[i] = '\0'; return i; } #endif