/[ascend]/trunk/base/generic/general/env.c
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Contents of /trunk/base/generic/general/env.c

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Revision 913 - (show annotations) (download) (as text)
Sat Oct 28 03:55:19 2006 UTC (13 years, 8 months ago) by johnpye
File MIME type: text/x-csrc
File size: 5825 byte(s)
Added test for SUNDIALS version (2.2.1 and 2.3.0-pre are preferred)
Fixed silly warning message about ignored return values from CONSOLE_DEBUG on GCC.
1 /* ASCEND modeling environment
2 Copyright (C) 2006 Carnegie Mellon University
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA.
18 */
19
20 #include "env.h"
21
22 #include <stdlib.h>
23 #include <string.h>
24 #include <stdio.h>
25
26 #if !defined(TEST) && !defined(VERBOSE)
27 /* hard wiring NDEBUG here is a misuse of NDEBUG and causes errors/warning
28 on the compile line. renamed to NOISY.*/
29 # define NOISY 1
30 #endif
31
32 #ifndef NOISY
33 # include <assert.h>
34 # define M(MSG) fprintf(stderr,"%s:%d: (%s) %s\n",__FILE__,__LINE__,__FUNCTION__,MSG);fflush(stderr)
35 # define MC(CLR,MSG) fprintf(stderr,"\033[%sm%s:%d: (%s) %s\033[0m\n",CLR,__FILE__,__LINE__,__FUNCTION__,MSG)
36 # define MM(MSG) MC("34",MSG)
37 # define X(VAR) fprintf(stderr,"%s:%d: (%s) %s=%s\n",__FILE__,__LINE__,__FUNCTION__,#VAR,VAR)
38 # define XC(CLR,VAR) fprintf(stderr,"\033[%sm%s:%d: (%s) %s=%s\033[0m\n",CLR,__FILE__,__LINE__,__FUNCTION__,#VAR,VAR)
39 # define C(VAR) fprintf(stderr,"%s:%d: (%s) %s=%c\n",__FILE__,__LINE__,__FUNCTION__,#VAR,VAR)
40 # define V(VAR) fprintf(stderr,"%s:%d: (%s) %s=%d\n",__FILE__,__LINE__,__FUNCTION__,#VAR,(VAR))
41 # define D(VAR) fprintf(stderr,"%s:%d: (%s) %s=",__FILE__,__LINE__,__FUNCTION__,#VAR);ospath_debug(VAR)
42 # define DD(VAR) fprintf(stderr,"%c[34;1m%s:%d: (%s)%c[0m %s=",27,__FILE__,__LINE__,__FUNCTION__,27,#VAR);ospath_debug(VAR)
43 #else /* NOISY*/
44 # include <assert.h>
45 # define M(MSG) ((void)0)
46 # define MC(CLR,MSG) ((void)0)
47 # define X(VAR) ((void)0)
48 # define XC(CLR,VAR) ((void)0)
49 # define C(VAR) ((void)0)
50 # define V(VAR) ((void)0)
51 # define D(VAR) ((void)0)
52 # define DD(VAR) ((void)0)
53 # define MM(VAR) ((void)0)
54 #endif /* NOISY*/
55
56 #if !defined(FREE) && !defined(MALLOC)
57 # define FREE free
58 # define MALLOC malloc
59 #endif
60
61 #define ENV_MAX_VAR_NAME 64 /* arbitrarily*/
62
63 char * env_subst_level(const char *path,GetEnvFn *getenvptr, int level);
64
65 char * env_subst(const char *path,GetEnvFn *getenvptr){
66 char *dest;
67
68 X(path);
69
70 /* no substitution required */
71 if(getenvptr==NULL){
72 dest = MALLOC(sizeof(char) * (strlen(path) + 1));
73 strcpy(dest,path);
74 return dest;
75 }
76
77 return env_subst_level(path,getenvptr, 0);
78 }
79
80
81 int env_import(const char *varname,GetEnvFn *getenvptr,PutEnvFn *putenvptr){
82 char *val = (*getenvptr)(varname);
83 char *envcmd;
84 if(val!=NULL){
85 envcmd = MALLOC(sizeof(char) * (strlen(varname) + 1 + strlen(val) + 1));
86 sprintf(envcmd,"%s=%s",varname,val);
87 return (*putenvptr)(envcmd);
88 }
89 return -1;
90 }
91
92 char * env_subst_level(const char *path,GetEnvFn *getenvptr, int level){
93 char *dest, *dest1;
94 char *msg;
95 char *p, *q, *i, *j, *val;
96 char varname[ENV_MAX_VAR_NAME+1];
97 int len, vallen, newlen;
98 int copy_in_place;
99 /*size_t L;*/
100 (void)level;
101 len = strlen(path);
102
103 dest = MALLOC(sizeof(char)*(strlen(path)+1));
104 strcpy(dest,path);
105
106 X(dest);
107 V(len);
108
109 /* scan backwards for $ */
110 for(p=dest+len-1; p>=dest; --p){
111 C(*p);
112
113 if(*p=='$'){
114 M("FOUND DOLLAR SIGN");
115 ++p;
116 /* FIXME: note this is i = j = varname in C; p is ignored. */
117 for(i=p, j=varname; i<dest+len && j<varname+ENV_MAX_VAR_NAME; ++i,++j){
118 /*C(*i);*/
119 if(!(
120 (*i >= 'A' && *i < 'Z')
121 || (*i == '_')
122 )){
123 M("NON-VARNAME CHAR FOUND");
124 break;
125 }
126 /*M("ADDING TO VARNAME");*/
127 *j=*i;
128 }
129 /*M("COMPLETED VARNAME");*/
130 *j='\0';
131 X(varname);
132
133 if(j==varname+ENV_MAX_VAR_NAME){
134 FREE(dest);
135 msg = "__VAR_NAME_TOO_LONG__";
136 dest = MALLOC(sizeof(char)*(strlen(msg)+1));
137 strcpy(dest,msg);
138 return dest;
139 }
140 M("FOUND VAR NAME");
141 X(varname);
142 val = (*getenvptr)(varname);
143 if(val==NULL){
144 /*replace with null*/
145 q = --p;
146 for(j=i; j<dest+strlen(varname); ++j, ++q){
147 *q=*j;
148 M(p);
149 }
150 *q='\0';
151 M(p);
152 }else{
153 vallen=strlen(val);
154 X(val);
155 V(strlen(val));
156 X(dest);
157 V(strlen(dest));
158 X(varname);
159 V(strlen(varname));
160 --p;
161 V((i-p));
162 C(*i);
163 C(*p);
164
165 if(vallen > (i-p)){
166 copy_in_place = 0;
167 }else{
168 copy_in_place = 1;
169 }
170
171 if(copy_in_place){
172 M("COPY_IN_PLACE");
173
174 for(j=p, q=val; *q!='\0'; ++q, ++j){
175 *j=*q;
176 }
177
178 X(p);
179 X(i);
180 C(*j);
181
182 for(q=i;*q!='\0'; ++q, ++j){
183 *j=*q;
184 C(*q);
185 }
186 *j='\0';
187
188 }else{
189 MC("1","COPY FROM DUPLICATE");
190 newlen = strlen(dest)+vallen-(i-p);
191
192 dest1 = MALLOC(sizeof(char)*(newlen+1));
193 strcpy(dest1,dest);
194
195 p = dest1 + (p - dest);
196
197 X(p);
198 X(i);
199 X(dest1);
200
201 for(j=p, q=val; *q!='\0'; ++q, ++j){
202 C(*q);
203 *j=*q;
204 }
205 X(p);
206
207 X(dest);
208 for(q=i;*q!='\0'; ++q, ++j){
209 C(*q);
210 *j=*q;
211 }
212
213 *j='\0';
214
215 i = dest1 + (i - dest);
216
217 /* throw away the old copy */
218 FREE(dest);
219 dest = dest1;
220
221 }
222
223 XC("34;1",dest);
224
225 /* move to the the end of the just-inserted chars */
226 p = i+1;
227 C(*p);
228
229 }
230
231 }
232 }
233 M("DONE");
234 return dest;
235 }
236
237 /*--------------------------------
238 some simple test routines...
239 */
240 #ifdef TEST
241
242 #include <assert.h>
243
244 /* switch to boldface for messages in 'main' */
245 #undef D
246 #define D DD
247 #undef M
248 #define M MM
249
250 int main(void){
251 char s1[]="$ASCENDTK/bitmaps";
252 char *r;
253
254 M(s1);
255
256 r = env_subst(s1,getenv);
257 M(r);
258
259 /*assert(strcmp(r,"C:/msys/1.0/share/ascend/share")==0);*/
260 }
261
262 #endif

john.pye@anu.edu.au
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