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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 "MagickCore/locale_.h"
23 
24 #if defined(__cplusplus) || defined(c_plusplus)
25 extern "C" {
26 #endif
27 
SiPrefixToDoubleInterval(const char * string,const double interval)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 
StringToDouble(const char * magick_restrict string,char ** magick_restrict sentinal)43 static inline double StringToDouble(const char *magick_restrict string,
44   char **magick_restrict sentinal)
45 {
46   return(InterpretLocaleValue(string,sentinal));
47 }
48 
StringLocateSubstring(const char * haystack,const char * needle)49 static inline const char *StringLocateSubstring(const char *haystack,
50   const char *needle)
51 {
52 #if defined(MAGICKCORE_HAVE_STRCASESTR)
53   return(strcasestr(haystack,needle));
54 #else
55   {
56     size_t
57       length_needle,
58       length_haystack;
59 
60     size_t
61       i;
62 
63     if (!haystack || !needle)
64       return(NULL);
65     length_needle=strlen(needle);
66     length_haystack=strlen(haystack)-length_needle+1;
67     for (i=0; i < length_haystack; i++)
68     {
69       size_t
70         j;
71 
72       for (j=0; j < length_needle; j++)
73       {
74         unsigned char c1 = (unsigned char) haystack[i+j];
75         unsigned char c2 = (unsigned char) needle[j];
76         if (toupper((int) c1) != toupper((int) c2))
77           goto next;
78       }
79       return((char *) haystack+i);
80       next:
81        ;
82     }
83     return((char *) NULL);
84   }
85 #endif
86 }
87 
StringToDoubleInterval(const char * string,const double interval)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 
StringToInteger(const char * magick_restrict value)103 static inline int StringToInteger(const char *magick_restrict value)
104 {
105   return((int) strtol(value,(char **) NULL,10));
106 }
107 
StringToLong(const char * magick_restrict value)108 static inline long StringToLong(const char *magick_restrict value)
109 {
110   return(strtol(value,(char **) NULL,10));
111 }
112 
StringToMagickSizeType(const char * string,const double interval)113 static inline MagickSizeType StringToMagickSizeType(const char *string,
114   const double interval)
115 {
116   double
117     value;
118 
119   value=SiPrefixToDoubleInterval(string,interval);
120   if (value >= (double) MagickULLConstant(~0))
121     return(MagickULLConstant(~0));
122   return((MagickSizeType) value);
123 }
124 
StringToSizeType(const char * string,const double interval)125 static inline size_t StringToSizeType(const char *string,const double interval)
126 {
127   double
128     value;
129 
130   value=SiPrefixToDoubleInterval(string,interval);
131   if (value >= (double) MagickULLConstant(~0))
132     return(~0UL);
133   return((size_t) value);
134 }
135 
StringToUnsignedLong(const char * magick_restrict value)136 static inline unsigned long StringToUnsignedLong(
137   const char *magick_restrict value)
138 {
139   return(strtoul(value,(char **) NULL,10));
140 }
141 
142 #if defined(__cplusplus) || defined(c_plusplus)
143 }
144 #endif
145 
146 #endif
147