source: main/tags/2.81rc/search4j/search4j.cpp@ 21221

Last change on this file since 21221 was 17302, checked in by oranfry, 16 years ago

added a priority hint option to search4j
File size: 6.5 KB
Line 
1/*
2* Search4j utility
3* Command Line utility to search a system for java, launch a jar, or compare java versions
4* base on launch4j
5*/
6
7#include "libsearch4j.h"
8
9void usage();
10
11enum Action {
12 Find,
13 Launch,
14 Compare
15};
16
17enum JvmProperty {
18 JavaHome,
19 Version,
20 Executable
21};
22
23string actionToString( Action a ) {
24 if ( a == Find )
25 return "Find";
26 else if ( a == Launch )
27 return "Launch";
28 else if ( a == Compare )
29 return "Compare";
30 return "Unknown";
31}
32
33string jvmPropertyToString( JvmProperty jp ) {
34 if ( jp == JavaHome )
35 return "JavaHome";
36 else if ( jp == Version )
37 return "Version";
38 else if ( jp == Executable )
39 return "Executable";
40 return "Unknown";
41}
42
43
44int main ( int argc, char** argv ) {
45
46 bool verbose = false;
47 string phint = "";
48 string hint = "";
49 bool use_minimum = false;
50 bool useJavaw = false;
51 Jvm minimum;
52 JvmProperty jvmProperty = JavaHome;
53 Action action = Find;
54 string arg1 = "";
55
56 //parse commandline arguments
57 for (int i=1; i<argc; i++) {
58 if ( strcmp(argv[i], "--verbose") == 0 ) {
59 verbose = true;
60 } else if ( strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "--usage") == 0 ) {
61 usage();
62 return 0;
63 } else if ( strcmp(argv[i], "-v") == 0 ) {
64 jvmProperty = Version;
65 } else if ( strcmp(argv[i], "-e") == 0 ) {
66 jvmProperty = Executable;
67 } else if ( strcmp(argv[i], "-c") == 0 ) {
68 action = Compare;
69 if ( i == argc-1 ) {
70 usage();
71 return -1;
72 } else {
73 arg1 = argv[++i];
74 }
75
76 } else if ( strcmp(argv[i], "-m") == 0 ) {
77 if ( i == argc-1 ) {
78 usage();
79 return -1;
80 } else {
81 if ( !minimum.setVersionFromString( argv[++i] ) ) {
82 usage();
83 return 0;
84 }
85 use_minimum = true;
86 }
87
88 } else if ( strcmp(argv[i], "-l") == 0 ) {
89 if ( i == argc-1 ) {
90 usage();
91 return -1;
92 } else {
93 action = Launch;
94 arg1 = argv[++i];
95 }
96
97 } else if ( strcmp(argv[i], "-p") == 0 ) {
98 if ( i == argc-1 ) {
99 usage();
100 return -1;
101 } else {
102 phint = argv[++i];
103 }
104
105 } else if ( strcmp(argv[i], "-h") == 0 ) {
106 if ( i == argc-1 ) {
107 usage();
108 return -1;
109 } else {
110 hint = argv[++i];
111 }
112
113 #ifdef WINDOWS
114 } else if ( strcmp(argv[i], "-w") == 0 ) {
115 useJavaw = true;
116 #endif
117
118 } else {
119 cout << "unknown option: " << argv[i] << endl;
120 return -1;
121 }
122 }
123
124 //summarise commandline arguments
125 if ( verbose ) {
126 cout << "Action: " << actionToString( action ) << endl;
127 }
128
129 //find java
130 Jvm foundJvm;
131 bool found = find( foundJvm, use_minimum, minimum, phint, hint, verbose );
132
133 //check if it was found
134 if ( found ) {
135 if ( verbose ) cout << "Found JVM at '" << foundJvm.getJavaHome() << "'" << endl;
136 } else {
137 //not found - exit with -1
138 if ( verbose ) cout << "JVM not found" << endl;
139 return -1;
140 }
141
142
143 //Find Action
144 //---------------
145 if ( action == Find ) {
146
147 if ( verbose ) cout << "Property to print: " << jvmPropertyToString( jvmProperty ) << endl;
148
149 //found - print out info about it
150 if ( jvmProperty == JavaHome ) {
151 cout << foundJvm.getJavaHome() << endl;
152 } else if ( jvmProperty == Version ) {
153 cout << foundJvm.getVersion() << endl;
154 } else if ( jvmProperty == Executable ) {
155 #ifdef WINDOWS
156 if ( useJavaw ) {
157 cout << foundJvm.getWinExecutable() << endl;
158 } else {
159 cout << foundJvm.getExecutable() << endl;
160 }
161 #else
162 cout << foundJvm.getExecutable() << endl;
163 #endif
164 } else {
165 return -1; //should never happen
166 }
167
168
169 //Compare Action
170 //---------------
171 } else if ( action == Compare ) {
172
173 if ( verbose ) cout << "Compare to java at: " << arg1 << endl;
174
175 //load a dummy jvm for comparison
176 Jvm givenJvm;
177 if ( !givenJvm.setVersionFromString(arg1) ) {
178 if ( verbose ) cout << "Could not parse that version string" << endl;
179 return -1;
180 }
181
182 //compare
183 cout << foundJvm.compare( givenJvm );
184 return 0;
185
186
187 //Launch Action
188 //---------------
189 } else if ( action == Launch ) {
190
191 if ( verbose ) cout << "Jar to launch: " << arg1 << endl;
192
193 string cmd = "\"", output = "";
194 #ifdef WINDOWS
195 if ( useJavaw ) {
196 cmd.append( foundJvm.getWinExecutable() );
197 } else {
198 cmd.append( foundJvm.getExecutable() );
199 }
200 #else
201 cmd.append( foundJvm.getExecutable() );
202 #endif
203 cmd.append( "\" -jar " );
204 cmd.append( arg1 );
205
206 process( cmd, true );
207
208 }
209
210 return 0;
211}
212
213void usage() {
214
215 cout
216 << "-----------------" << endl
217 << " search4j: usage" << endl
218 << "-----------------" << endl
219 << "Three usage methods: find, compare and launch" << endl
220 << endl
221 << "find: find java and print out information about it" << endl
222 << endl
223 << " search4j [-v|-e]" << endl
224 << " eg: search4j -e" << endl
225 << endl
226 << " by default, print JAVA_HOME. E.g., C:\\Program Files\\jre1.5.0_15, or" << endl
227 << " if -v is specified, print the java version string. E.g. 1.5.0_15, or" << endl
228 << " if -e is specified, print the path the to the java executable. E.g. C:\\Program Files\\jre1.5.0_15\\bin\\java.exe" << endl
229 << endl
230 << "compare: compare the found java with the given java version string" << endl
231 << endl
232 << " search4j -c VERSION_STRING" << endl
233 << " eg: search4j -c VERSION_STRING" << endl
234 << endl
235 << " print -1 if found java is older" << endl
236 << " print 0 if found java is same" << endl
237 << " print 1 if found java is newer" << endl
238 << endl
239 << "launch: launch the given executable jar with the found java" << endl
240 << endl
241 << " search4j -l EXECUTABLE_JAR [-m VERSION_STRING]" << endl
242 << " eg: search4j -l greenstone3.jar" << endl
243 << endl
244 << " specify the location of the jar relative to the current directory" << endl
245 << endl
246 << "Global Options:" << endl
247 << " -m VERSION_STRING: (minimum) find a java of the given version or newer, or fail" << endl
248 << " -p LOCATION: (priority hint) first look for java in LOCATION (treated as a JAVA_HOME)" << endl
249 << " -h LOCATION: (hint) as a last resort look for java in LOCATION (treated as a JAVA_HOME)" << endl
250 << " -w: (windows) find and/or use the javaw.exe executable instead of java.exe (in windows only)" << endl
251 << " --verbose : have search4j print out information about what its doing" << endl
252 << " --help : display this usage screen" << endl
253 << endl
254 ;
255}
Note: See TracBrowser for help on using the repository browser.