dccca82b1a
log.h really should only include the bare minimum of other headers, as it is really pulled into pretty much everything else and already in itself one of the most basic pieces of code we have. Let's hence drop inclusion of: 1. sd-id128.h because it's entirely unneeded in current log.h 2. errno.h, dito. 3. sys/signalfd.h which we can replace by a simple struct forward declaration 4. process-util.h which was needed for getpid_cached() which we now hide in a funciton log_emergency_level() instead, which nicely abstracts the details away. 5. sys/socket.h which was needed for struct iovec, but a simple struct forward declaration suffices for that too. Ultimately this actually makes our source tree larger (since users of the functionality above must now include it themselves, log.h won't do that for them), but I think it helps to untangle our web of includes a tiny bit. (Background: I'd like to isolate the generic bits of src/basic/ enough so that we can do a git submodule import into casync for it)
111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
/* gunicode.c - Unicode manipulation functions
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*
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* Copyright (C) 1999, 2000 Tom Tromey
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* Copyright 2000, 2005 Red Hat, Inc.
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*/
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#include "gunicode.h"
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#define unichar uint32_t
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/**
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* g_utf8_prev_char:
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* @p: a pointer to a position within a UTF-8 encoded string
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*
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* Finds the previous UTF-8 character in the string before @p.
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*
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* @p does not have to be at the beginning of a UTF-8 character. No check
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* is made to see if the character found is actually valid other than
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* it starts with an appropriate byte. If @p might be the first
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* character of the string, you must use g_utf8_find_prev_char() instead.
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*
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* Return value: a pointer to the found character.
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**/
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char *
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utf8_prev_char (const char *p)
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{
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for (;;)
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{
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p--;
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if ((*p & 0xc0) != 0x80)
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return (char *)p;
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}
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}
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struct Interval
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{
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unichar start, end;
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};
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static int
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interval_compare (const void *key, const void *elt)
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{
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unichar c = (unichar) (long) (key);
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struct Interval *interval = (struct Interval *)elt;
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if (c < interval->start)
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return -1;
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if (c > interval->end)
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return +1;
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return 0;
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}
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/*
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* NOTE:
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*
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* The tables for g_unichar_iswide() and g_unichar_iswide_cjk() are
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* generated from the Unicode Character Database's file
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* extracted/DerivedEastAsianWidth.txt using the gen-iswide-table.py
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* in this way:
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*
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* ./gen-iswide-table.py < path/to/ucd/extracted/DerivedEastAsianWidth.txt | fmt
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*
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* Last update for Unicode 6.0.
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*/
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/**
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* g_unichar_iswide:
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* @c: a Unicode character
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*
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* Determines if a character is typically rendered in a double-width
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* cell.
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*
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* Return value: %TRUE if the character is wide
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**/
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bool
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unichar_iswide (unichar c)
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{
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/* See NOTE earlier for how to update this table. */
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static const struct Interval wide[] = {
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{0x1100, 0x115F}, {0x2329, 0x232A}, {0x2E80, 0x2E99}, {0x2E9B, 0x2EF3},
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{0x2F00, 0x2FD5}, {0x2FF0, 0x2FFB}, {0x3000, 0x303E}, {0x3041, 0x3096},
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{0x3099, 0x30FF}, {0x3105, 0x312D}, {0x3131, 0x318E}, {0x3190, 0x31BA},
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{0x31C0, 0x31E3}, {0x31F0, 0x321E}, {0x3220, 0x3247}, {0x3250, 0x32FE},
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{0x3300, 0x4DBF}, {0x4E00, 0xA48C}, {0xA490, 0xA4C6}, {0xA960, 0xA97C},
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{0xAC00, 0xD7A3}, {0xF900, 0xFAFF}, {0xFE10, 0xFE19}, {0xFE30, 0xFE52},
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{0xFE54, 0xFE66}, {0xFE68, 0xFE6B}, {0xFF01, 0xFF60}, {0xFFE0, 0xFFE6},
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{0x1B000, 0x1B001}, {0x1F200, 0x1F202}, {0x1F210, 0x1F23A},
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{0x1F240, 0x1F248}, {0x1F250, 0x1F251},
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{0x1F300, 0x1F567}, /* Miscellaneous Symbols and Pictographs */
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{0x20000, 0x2FFFD}, {0x30000, 0x3FFFD},
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};
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if (bsearch ((void *)(uintptr_t)c, wide, (sizeof (wide) / sizeof ((wide)[0])), sizeof wide[0],
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interval_compare))
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return true;
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return false;
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}
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const char utf8_skip_data[256] = {
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
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3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,1,1
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};
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