MagickCore  6.9.12-67
Convert, Edit, Or Compose Bitmap Images
 All Data Structures
string-private.h
1 /*
2  Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization
3  dedicated to making software imaging solutions freely available.
4 
5  You may not use this file except in compliance with the License. You may
6  obtain a copy of the License at
7 
8  https://imagemagick.org/script/license.php
9 
10  Unless required by applicable law or agreed to in writing, software
11  distributed under the License is distributed on an "AS IS" BASIS,
12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  See the License for the specific language governing permissions and
14  limitations under the License.
15 
16  MagickCore private string methods.
17 */
18 #ifndef MAGICKCORE_STRING_PRIVATE_H
19 #define MAGICKCORE_STRING_PRIVATE_H
20 
21 #include <string.h>
22 #include "magick/locale_.h"
23 
24 #if defined(__cplusplus) || defined(c_plusplus)
25 extern "C" {
26 #endif
27 
28 static inline double SiPrefixToDoubleInterval(const char *string,
29  const double interval)
30 {
31  char
32  *q;
33 
34  double
35  value;
36 
37  value=InterpretSiPrefixValue(string,&q);
38  if (*q == '%')
39  value*=interval/100.0;
40  return(value);
41 }
42 
43 static inline const char *StringLocateSubstring(const char *haystack,
44  const char *needle)
45 {
46 #if defined(MAGICKCORE_HAVE_STRCASESTR)
47  return(strcasestr(haystack,needle));
48 #else
49  {
50  size_t
51  length_needle,
52  length_haystack;
53 
54  size_t
55  i;
56 
57  if (!haystack || !needle)
58  return(NULL);
59  length_needle=strlen(needle);
60  length_haystack=strlen(haystack)-length_needle+1;
61  for (i=0; i < length_haystack; i++)
62  {
63  size_t
64  j;
65 
66  for (j=0; j < length_needle; j++)
67  {
68  unsigned char c1 = (unsigned char) haystack[i+j];
69  unsigned char c2 = (unsigned char) needle[j];
70  if (toupper((int) c1) != toupper((int) c2))
71  goto next;
72  }
73  return((char *) haystack+i);
74  next:
75  ;
76  }
77  return((char *) NULL);
78  }
79 #endif
80 }
81 
82 static inline double StringToDouble(const char *magick_restrict string,
83  char **magick_restrict sentinal)
84 {
85  return(InterpretLocaleValue(string,sentinal));
86 }
87 
88 static inline double StringToDoubleInterval(const char *string,
89  const double interval)
90 {
91  char
92  *q;
93 
94  double
95  value;
96 
97  value=InterpretLocaleValue(string,&q);
98  if (*q == '%')
99  value*=interval/100.0;
100  return(value);
101 }
102 
103 static inline int StringToInteger(const char *magick_restrict value)
104 {
105  if (value == (const char *) NULL)
106  return(0);
107  return((int) strtol(value,(char **) NULL,10));
108 }
109 
110 static inline long StringToLong(const char *magick_restrict value)
111 {
112  if (value == (const char *) NULL)
113  return(0);
114  return(strtol(value,(char **) NULL,10));
115 }
116 
117 static inline size_t StringToSizeType(const char *string,const double interval)
118 {
119  double
120  value;
121 
122  value=SiPrefixToDoubleInterval(string,interval);
123  if (value >= (double) MagickULLConstant(~0))
124  return(~0UL);
125  return((size_t) value);
126 }
127 
128 static inline unsigned long StringToUnsignedLong(
129  const char *magick_restrict value)
130 {
131  if (value == (const char *) NULL)
132  return(0);
133  return(strtoul(value,(char **) NULL,10));
134 }
135 
136 #if defined(__cplusplus) || defined(c_plusplus)
137 }
138 #endif
139 
140 #endif