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Diffstat (limited to 'app/tools/halibut/charset/localenc.c')
-rw-r--r--app/tools/halibut/charset/localenc.c174
1 files changed, 174 insertions, 0 deletions
diff --git a/app/tools/halibut/charset/localenc.c b/app/tools/halibut/charset/localenc.c
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+++ b/app/tools/halibut/charset/localenc.c
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+/*
+ * local.c - translate our internal character set codes to and from
+ * our own set of plausibly legible character-set names. Also
+ * provides a canonical name for each encoding (useful for software
+ * announcing what character set it will be using), and a set of
+ * enumeration functions which return a list of supported
+ * encodings one by one.
+ *
+ * Also in this table are other ways people might plausibly refer
+ * to a charset (for example, Win1252 as well as CP1252). Where
+ * more than one string is given for a particular character set,
+ * the first one is the canonical one returned by
+ * charset_to_localenc.
+ *
+ * charset_from_localenc will attempt all other text translations
+ * as well as this table, to maximise the number of different ways
+ * you can select a supported charset.
+ */
+
+#include <ctype.h>
+#include "charset.h"
+#include "internal.h"
+
+static const struct {
+ const char *name;
+ int charset;
+ int return_in_enum; /* enumeration misses some charsets */
+} localencs[] = {
+ { "<UNKNOWN>", CS_NONE, 0 },
+ { "ASCII", CS_ASCII, 1 },
+ { "BS 4730", CS_BS4730, 1 },
+ { "ISO-8859-1", CS_ISO8859_1, 1 },
+ { "ISO-8859-1 with X11 line drawing", CS_ISO8859_1_X11, 0 },
+ { "ISO-8859-2", CS_ISO8859_2, 1 },
+ { "ISO-8859-3", CS_ISO8859_3, 1 },
+ { "ISO-8859-4", CS_ISO8859_4, 1 },
+ { "ISO-8859-5", CS_ISO8859_5, 1 },
+ { "ISO-8859-6", CS_ISO8859_6, 1 },
+ { "ISO-8859-7", CS_ISO8859_7, 1 },
+ { "ISO-8859-8", CS_ISO8859_8, 1 },
+ { "ISO-8859-9", CS_ISO8859_9, 1 },
+ { "ISO-8859-10", CS_ISO8859_10, 1 },
+ { "ISO-8859-11", CS_ISO8859_11, 1 },
+ { "ISO-8859-13", CS_ISO8859_13, 1 },
+ { "ISO-8859-14", CS_ISO8859_14, 1 },
+ { "ISO-8859-15", CS_ISO8859_15, 1 },
+ { "ISO-8859-16", CS_ISO8859_16, 1 },
+ { "CP437", CS_CP437, 1 },
+ { "CP850", CS_CP850, 1 },
+ { "CP866", CS_CP866, 1 },
+ { "CP1250", CS_CP1250, 1 },
+ { "Win1250", CS_CP1250, 0 },
+ { "CP1251", CS_CP1251, 1 },
+ { "Win1251", CS_CP1251, 0 },
+ { "CP1252", CS_CP1252, 1 },
+ { "Win1252", CS_CP1252, 0 },
+ { "CP1253", CS_CP1253, 1 },
+ { "Win1253", CS_CP1253, 0 },
+ { "CP1254", CS_CP1254, 1 },
+ { "Win1254", CS_CP1254, 0 },
+ { "CP1255", CS_CP1255, 1 },
+ { "Win1255", CS_CP1255, 0 },
+ { "CP1256", CS_CP1256, 1 },
+ { "Win1256", CS_CP1256, 0 },
+ { "CP1257", CS_CP1257, 1 },
+ { "Win1257", CS_CP1257, 0 },
+ { "CP1258", CS_CP1258, 1 },
+ { "Win1258", CS_CP1258, 0 },
+ { "KOI8-R", CS_KOI8_R, 1 },
+ { "KOI8-U", CS_KOI8_U, 1 },
+ { "KOI8-RU", CS_KOI8_RU, 1 },
+ { "JIS X 0201", CS_JISX0201, 1 },
+ { "JIS-X-0201", CS_JISX0201, 0 },
+ { "JIS_X_0201", CS_JISX0201, 0 },
+ { "JISX0201", CS_JISX0201, 0 },
+ { "Mac Roman", CS_MAC_ROMAN, 1 },
+ { "Mac Turkish", CS_MAC_TURKISH, 1 },
+ { "Mac Croatian", CS_MAC_CROATIAN, 1 },
+ { "Mac Iceland", CS_MAC_ICELAND, 1 },
+ { "Mac Romanian", CS_MAC_ROMANIAN, 1 },
+ { "Mac Greek", CS_MAC_GREEK, 1 },
+ { "Mac Cyrillic", CS_MAC_CYRILLIC, 1 },
+ { "Mac Thai", CS_MAC_THAI, 1 },
+ { "Mac Centeuro", CS_MAC_CENTEURO, 1 },
+ { "Mac Symbol", CS_MAC_SYMBOL, 1 },
+ { "Mac Dingbats", CS_MAC_DINGBATS, 1 },
+ { "Mac Roman (old)", CS_MAC_ROMAN_OLD, 0 },
+ { "Mac Croatian (old)", CS_MAC_CROATIAN_OLD, 0 },
+ { "Mac Iceland (old)", CS_MAC_ICELAND_OLD, 0 },
+ { "Mac Romanian (old)", CS_MAC_ROMANIAN_OLD, 0 },
+ { "Mac Greek (old)", CS_MAC_GREEK_OLD, 0 },
+ { "Mac Cyrillic (old)", CS_MAC_CYRILLIC_OLD, 0 },
+ { "Mac Ukraine", CS_MAC_UKRAINE, 1 },
+ { "Mac VT100", CS_MAC_VT100, 1 },
+ { "Mac VT100 (old)", CS_MAC_VT100_OLD, 0 },
+ { "VISCII", CS_VISCII, 1 },
+ { "HP ROMAN8", CS_HP_ROMAN8, 1 },
+ { "DEC MCS", CS_DEC_MCS, 1 },
+ { "DEC graphics", CS_DEC_GRAPHICS, 1 },
+ { "DEC-graphics", CS_DEC_GRAPHICS, 0 },
+ { "DECgraphics", CS_DEC_GRAPHICS, 0 },
+ { "UTF-8", CS_UTF8, 1 },
+ { "UTF-7", CS_UTF7, 1 },
+ { "UTF-7-conservative", CS_UTF7_CONSERVATIVE, 0 },
+ { "EUC-CN", CS_EUC_CN, 1 },
+ { "EUC-KR", CS_EUC_KR, 1 },
+ { "EUC-JP", CS_EUC_JP, 1 },
+ { "EUC-TW", CS_EUC_TW, 1 },
+ { "ISO-2022-JP", CS_ISO2022_JP, 1 },
+ { "ISO-2022-KR", CS_ISO2022_KR, 1 },
+ { "Big5", CS_BIG5, 1 },
+ { "Shift-JIS", CS_SHIFT_JIS, 1 },
+ { "HZ", CS_HZ, 1 },
+ { "UTF-16BE", CS_UTF16BE, 1 },
+ { "UTF-16LE", CS_UTF16LE, 1 },
+ { "UTF-16", CS_UTF16, 1 },
+ { "CP949", CS_CP949, 1 },
+ { "PDFDocEncoding", CS_PDF, 1 },
+ { "StandardEncoding", CS_PSSTD, 1 },
+ { "COMPOUND_TEXT", CS_CTEXT, 1 },
+ { "COMPOUND-TEXT", CS_CTEXT, 0 },
+ { "COMPOUND TEXT", CS_CTEXT, 0 },
+ { "COMPOUNDTEXT", CS_CTEXT, 0 },
+ { "CTEXT", CS_CTEXT, 0 },
+ { "ISO-2022", CS_ISO2022, 1 },
+ { "ISO2022", CS_ISO2022, 0 },
+};
+
+const char *charset_to_localenc(int charset)
+{
+ int i;
+
+ for (i = 0; i < (int)lenof(localencs); i++)
+ if (charset == localencs[i].charset)
+ return localencs[i].name;
+
+ return NULL; /* not found */
+}
+
+int charset_from_localenc(const char *name)
+{
+ int i;
+
+ if ( (i = charset_from_mimeenc(name)) != CS_NONE)
+ return i;
+ if ( (i = charset_from_xenc(name)) != CS_NONE)
+ return i;
+
+ for (i = 0; i < (int)lenof(localencs); i++) {
+ const char *p, *q;
+ p = name;
+ q = localencs[i].name;
+ while (*p || *q) {
+ if (tolower(*p) != tolower(*q))
+ break;
+ p++; q++;
+ }
+ if (!*p && !*q)
+ return localencs[i].charset;
+ }
+
+ return CS_NONE; /* not found */
+}
+
+int charset_localenc_nth(int n)
+{
+ int i;
+
+ for (i = 0; i < (int)lenof(localencs); i++)
+ if (localencs[i].return_in_enum && !n--)
+ return localencs[i].charset;
+
+ return CS_NONE; /* end of list */
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-17 20:08:36 +0000