Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/harfbuzz/src/hb-number.cc @ 22:d77477b4e151

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Let _int_rc() also handle (i.e. ignore) a local version suffix
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 12:05:57 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright © 2019 Ebrahim Byagowi
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3 *
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4 * This is part of HarfBuzz, a text shaping library.
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5 *
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6 * Permission is hereby granted, without written agreement and without
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7 * license or royalty fees, to use, copy, modify, and distribute this
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8 * software and its documentation for any purpose, provided that the
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9 * above copyright notice and the following two paragraphs appear in
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10 * all copies of this software.
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11 *
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12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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16 * DAMAGE.
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17 *
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18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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23 *
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24 */
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26 #include "hb.hh"
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27 #include "hb-machinery.hh"
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28 #include "hb-number.hh"
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29 #include "hb-number-parser.hh"
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31 template<typename T, typename Func>
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32 static bool
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33 _parse_number (const char **pp, const char *end, T *pv,
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34 bool whole_buffer, Func f)
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35 {
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36 char buf[32];
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37 unsigned len = hb_min (ARRAY_LENGTH (buf) - 1, (unsigned) (end - *pp));
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38 strncpy (buf, *pp, len);
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39 buf[len] = '\0';
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41 char *p = buf;
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42 char *pend = p;
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44 errno = 0;
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45 *pv = f (p, &pend);
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46 if (unlikely (errno || p == pend ||
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47 /* Check if consumed whole buffer if is requested */
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48 (whole_buffer && pend - p != end - *pp)))
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49 return false;
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51 *pp += pend - p;
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52 return true;
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53 }
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55 bool
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56 hb_parse_int (const char **pp, const char *end, int *pv, bool whole_buffer)
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57 {
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58 return _parse_number<int> (pp, end, pv, whole_buffer,
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59 [] (const char *p, char **end)
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60 { return strtol (p, end, 10); });
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61 }
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63 bool
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64 hb_parse_uint (const char **pp, const char *end, unsigned *pv,
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65 bool whole_buffer, int base)
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66 {
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67 return _parse_number<unsigned> (pp, end, pv, whole_buffer,
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68 [base] (const char *p, char **end)
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69 { return strtoul (p, end, base); });
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70 }
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71
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72 bool
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73 hb_parse_double (const char **pp, const char *end, double *pv, bool whole_buffer)
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74 {
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75 const char *pend = end;
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76 *pv = strtod_rl (*pp, &pend);
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77 if (unlikely (*pp == pend)) return false;
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78 *pp = pend;
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79 return !whole_buffer || end == pend;
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80 }