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made the vocab exercise more tolerable to capslock and minor keyboard related BS

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This commit is contained in:
Martin Dvořák 2026-09-11 21:02:20 +02:00
commit dc157e8ef1
2 changed files with 109 additions and 68 deletions
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47
util.c
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@ -5,34 +5,59 @@
/* ------------------------------------------------------------------ */
char *normalize_answer(const char *input) {
GString *pre = g_string_new(NULL);
GString *out = g_string_new(NULL);
const gchar *down = g_utf8_strdown(input, -1);
const gchar *p = down;
const gchar *down = g_utf8_strdown(input ? input : "", -1);
gchar *decomp;
const gchar *p;
gboolean prev_space = FALSE;
while (*p) {
/* German special letters first, so ä/ö/ü/ß keep their two-letter
* keyboard fallbacks (ae/oe/ue/ss). */
for (p = down; *p; p = g_utf8_next_char(p)) {
gunichar ch = g_utf8_get_char(p);
p = g_utf8_next_char(p);
switch (ch) {
case 0x00e4: g_string_append(pre, "ae"); break; /* ä */
case 0x00f6: g_string_append(pre, "oe"); break; /* ö */
case 0x00fc: g_string_append(pre, "ue"); break; /* ü */
case 0x00df: g_string_append(pre, "ss"); break; /* ß */
default: g_string_append_unichar(pre, ch); break;
}
}
/* Decompose and drop combining accent marks so Czech letters such as
* é/ě/ř/ů/ž/š/č are treated as their base letters. */
decomp = g_utf8_normalize(pre->str, -1, G_NORMALIZE_NFD);
if (!decomp)
decomp = g_strdup(pre->str);
for (p = decomp; *p; p = g_utf8_next_char(p)) {
gunichar ch = g_utf8_get_char(p);
if (g_unichar_combining_class(ch) != 0)
continue; /* accent mark */
if (g_unichar_isspace(ch)) {
if (out->len > 0 && !prev_space)
g_string_append_c(out, ' ');
prev_space = TRUE;
continue;
}
if (!g_unichar_isalnum(ch))
continue; /* ignore punctuation and symbols */
prev_space = FALSE;
switch (ch) {
case 0x00e4: g_string_append(out, "ae"); break; /* ä */
case 0x00f6: g_string_append(out, "oe"); break; /* ö */
case 0x00fc: g_string_append(out, "ue"); break; /* ü */
case 0x00df: g_string_append(out, "ss"); break; /* ß */
default: g_string_append_unichar(out, ch); break;
}
g_string_append_unichar(out, ch);
}
if (out->len > 0 && out->str[out->len - 1] == ' ')
g_string_truncate(out, out->len - 1);
g_free(decomp);
g_free((gpointer)down);
g_string_free(pre, TRUE);
return g_string_free(out, FALSE);
}