/[dtapublic]/projs/trunk/shared_source/c_tclxtens_7_5/extninit.c
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Contents of /projs/trunk/shared_source/c_tclxtens_7_5/extninit.c

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Revision 68 - (show annotations) (download)
Mon Oct 31 16:18:20 2016 UTC (6 years, 3 months ago) by dashley
File MIME type: text/plain
File size: 4091 byte(s)
Licensing change.  Header and footer cleanup.  Addition of keyword expansion.
1 //$Header$
2 //-------------------------------------------------------------------------------------------------
3 //This file is part of "David T. Ashley's Shared Source Code", a set of shared components
4 //integrated into many of David T. Ashley's projects.
5 //-------------------------------------------------------------------------------------------------
6 //This source code and any program in which it is compiled/used is provided under the MIT License,
7 //reproduced below.
8 //-------------------------------------------------------------------------------------------------
9 //Permission is hereby granted, free of charge, to any person obtaining a copy of
10 //this software and associated documentation files(the "Software"), to deal in the
11 //Software without restriction, including without limitation the rights to use,
12 //copy, modify, merge, publish, distribute, sublicense, and / or sell copies of the
13 //Software, and to permit persons to whom the Software is furnished to do so,
14 //subject to the following conditions :
15 //
16 //The above copyright notice and this permission notice shall be included in all
17 //copies or substantial portions of the Software.
18 //
19 //THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 //IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 //FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
22 //AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 //LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 //OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25 //SOFTWARE.
26 //-------------------------------------------------------------------------------------------------
27 #define MODULE_EXTNINIT
28
29 #include <assert.h>
30 #include <string.h>
31
32 #include "tcl.h"
33 #include "tcldecls.h"
34
35 #include "extninit.h"
36
37 #include "msgstrs.h"
38
39 #include "arblenints.h"
40 #include "crchashextns.h"
41 #include "credits.h"
42 #include "pr_randa.h"
43 #include "vcinfo.h"
44
45
46 //Initializes all extensions. Will go to tabulated mechanism and checking
47 //return codes as soon as prototyping complaints by compiler resolved.
48
49 void ExtninitInit(Tcl_Interp *interp)
50 {
51 //Initialize the MSGSTRS module. This will calculate the CRC32
52 //of all version control information and include it in the
53 //embedded message strings for that module.
54 MsgstrsInit();
55
56 //Initialize the arbitrary length integer extension.
57 ARBLENINTS_arbint_extn_init(interp);
58
59 //Initialize the "crc32" extension.
60 CRCHASHEXTNS_Crc32extnInit(interp);
61
62 //Initialize the "credits" extension.
63 CreditsInit(interp);
64
65 //Initialize the random number generation functions.
66 PrRandAInit(interp);
67
68 //Initialize the version control information function
69 //"vcinfo".
70 VcinfoInit(interp);
71 }
72
73 //07/28/01: Visually inspected. Seems OK. That plus using
74 //it should be enough.
75 int EXTNINIT_subextension_bsearch(
76 struct EXTNINIT_subextn_bsearch_record_struct *tbl,
77 int nelem,
78 const char *key)
79 {
80 int l, u, midpoint;
81 int compare_result;
82
83 //Eyeball the input parameters.
84 assert(tbl != NULL);
85 assert(nelem >= 0);
86 assert(key != NULL);
87
88 //Implement the standard bsearch algorithm.
89 l = 0;
90 u = nelem - 1;
91
92 while(1)
93 {
94 if (l > u)
95 {
96 return(-1);
97 }
98 else
99 {
100 midpoint = (l + u) / 2;
101
102 assert((midpoint >= 0) && (midpoint < nelem));
103
104 compare_result = strcmp(key, tbl[midpoint].name);
105
106 if (!compare_result)
107 {
108 return(midpoint);
109 }
110 else if (compare_result < 0)
111 {
112 u = midpoint - 1;
113 }
114 else
115 {
116 l = midpoint + 1;
117 }
118 }
119 }
120 }
121
122
123 const char *ExtninitCversion(void)
124 {
125 return ("$Header$");
126 }
127
128
129 const char *ExtninitHversion(void)
130 {
131 return (EXTNINIT_H_VERSION);
132 }
133
134 //End of extninit.c.

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