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Improve some unicode functions

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This commit is contained in:
Justine Tunney 2021-05-05 07:25:39 -07:00
parent b9187061a7
commit 1b5a5719c3
33 changed files with 8366 additions and 197 deletions
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37
libc/str/iswspace.c
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@ -18,6 +18,39 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/str/str.h"
int iswspace(wint_t wc) {
return isspace(wc);
/**
* Returns nonzero if c is space character.
*
* We define this as invisible characters which move the cursor. That
* means `\t\r\n\f\v` and unicodes whose category begins with `Z` but
* not ogham since it's not invisible and non-breaking spaces neither
* since they're not invisible to emacs users.
*/
int iswspace(wint_t c) {
switch (c) {
case '\t': // CHARACTER TABULATION
case '\n': // LINE FEED
case '\f': // FORM FEED
case '\v': // LINE TABULATION
case '\r': // CARRIAGE RETURN
case ' ': // SPACE
case 0x2000: // EN QUAD (Zs)
case 0x2001: // EM QUAD (Zs)
case 0x2002: // EN SPACE (Zs)
case 0x2003: // EM SPACE (Zs)
case 0x2004: // THREE-PER-EM SPACE (Zs)
case 0x2005: // FOUR-PER-EM SPACE (Zs)
case 0x2006: // SIX-PER-EM SPACE (Zs)
case 0x2007: // FIGURE SPACE (Zs)
case 0x2008: // PUNCTUATION SPACE (Zs)
case 0x2009: // THIN SPACE (Zs)
case 0x200a: // HAIR SPACE (Zs)
case 0x2028: // LINE SEPARATOR (Zl)
case 0x2029: // PARAGRAPH SEPARATOR (Zp)
case 0x205f: // MEDIUM MATHEMATICAL SPACE (Zs)
case 0x3000: // IDEOGRAPHIC SPACE (Zs)
return 1;
default:
return 0;
}
}