Mercurial > jhg

comparison src/org/tmatesoft/hg/core/HgFileInformer.java @ 361:8099939af5fa

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Utilize status object to supply more information about manifest check for specific file
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 09 Dec 2011 01:13:53 +0100
parents 5f9073eabf06
children 2fadf8695f8a
comparison
equal deleted inserted replaced
360:150500515714 361:8099939af5fa
19 import org.tmatesoft.hg.internal.ManifestRevision; 19 import org.tmatesoft.hg.internal.ManifestRevision;
20 import org.tmatesoft.hg.repo.HgDataFile; 20 import org.tmatesoft.hg.repo.HgDataFile;
21 import org.tmatesoft.hg.repo.HgInternals; 21 import org.tmatesoft.hg.repo.HgInternals;
22 import org.tmatesoft.hg.repo.HgRepository; 22 import org.tmatesoft.hg.repo.HgRepository;
23 import org.tmatesoft.hg.util.Path; 23 import org.tmatesoft.hg.util.Path;
24 import org.tmatesoft.hg.util.Status;
24 25
25 /** 26 /**
26 * Primary purpose is to provide information about file revisions at specific changeset. Multiple {@link #check(Path)} calls 27 * Primary purpose is to provide information about file revisions at specific changeset. Multiple {@link #check(Path)} calls
27 * are possible once {@link #changeset(Nodeid)} (and optionally, {@link #followRenames(boolean)}) were set. 28 * are possible once {@link #changeset(Nodeid)} (and optionally, {@link #followRenames(boolean)}) were set.
28 * 29 *
35 * ... 36 * ...
36 * } 37 * }
37 * </pre></code> 38 * </pre></code>
38 * 39 *
39 * FIXME need better name. It's more about manifest of specific changeset, rather than informing (about) files 40 * FIXME need better name. It's more about manifest of specific changeset, rather than informing (about) files
41 * TODO may add #manifest(Nodeid) to select manifest according to its revision (not only changeset revision as it's now)
40 * 42 *
41 * @author Artem Tikhomirov 43 * @author Artem Tikhomirov
42 * @author TMate Software Ltd. 44 * @author TMate Software Ltd.
43 */ 45 */
44 public class HgFileInformer { 46 public class HgFileInformer {
46 private final HgRepository repo; 48 private final HgRepository repo;
47 private boolean followRenames; 49 private boolean followRenames;
48 private Nodeid cset; 50 private Nodeid cset;
49 private ManifestRevision cachedManifest; 51 private ManifestRevision cachedManifest;
50 private HgFileRevision fileRevision; 52 private HgFileRevision fileRevision;
51 private boolean checked, renamed; 53 private boolean renamed;
54 private Status checkResult;
52 55
53 public HgFileInformer(HgRepository hgRepo) { 56 public HgFileInformer(HgRepository hgRepo) {
54 repo = hgRepo; 57 repo = hgRepo;
55 } 58 }
56 59
81 fileRevision = null; 84 fileRevision = null;
82 return this; 85 return this;
83 } 86 }
84 87
85 /** 88 /**
86 * Find file (or its origin, if {@link #followRenames(boolean)} was set to <code>true</code>) among files known at specified {@link #changeset(Nodeid)}. 89 * Shortcut to perform {@link #check(Path)} and {@link #exists()}. Result of the check may be accessed via {@link #getCheckStatus()}.
87 * 90 *
88 * @param file name of the file in question 91 * @param file name of the file in question
89 * @return <code>true</code> if file is known at the selected changeset. 92 * @return <code>true</code> if file is known at the selected changeset.
90 * @throws IllegalArgumentException if {@link #changeset(Nodeid)} not specified or file argument is bad. 93 * @throws IllegalArgumentException if {@link #changeset(Nodeid)} not specified or file argument is bad.
91 */ 94 * @throws HgInvalidControlFileException if access to revlog index/data entry failed
92 public boolean check(Path file) throws HgInvalidControlFileException { // XXX IStatus instead of boolean? If status, shall it handle exceptions as well? 95 */
96 public boolean checkExists(Path file) throws HgInvalidControlFileException {
97 check(file);
98 if (!checkResult.isOk() && checkResult.getException() instanceof HgInvalidControlFileException) {
99 throw (HgInvalidControlFileException) checkResult.getException();
100 }
101 return checkResult.isOk() && exists();
102 }
103
104 /**
105 * Find file (or its origin, if {@link #followRenames(boolean)} was set to <code>true</code>) among files known at specified {@link #changeset(Nodeid)}.
106 *
107 * @param file name of the file in question
108 * @return status object that describes outcome, {@link Status#isOk() Ok} status indicates successful completion of the operation, but doesn't imply
109 * file existence, use {@link #exists()} for that purpose. Message of the status may provide further hints on what exactly had happened.
110 * @throws IllegalArgumentException if {@link #changeset(Nodeid)} not specified or file argument is bad.
111 */
112 public Status check(Path file) {
93 fileRevision = null; 113 fileRevision = null;
94 checked = false; 114 checkResult = null;
95 renamed = false; 115 renamed = false;
96 if (cset == null || file == null || file.isDirectory()) { 116 if (cset == null || file == null || file.isDirectory()) {
97 throw new IllegalArgumentException(); 117 throw new IllegalArgumentException();
98 } 118 }
99 HgDataFile dataFile = repo.getFileNode(file); 119 HgDataFile dataFile = repo.getFileNode(file);
100 if (!dataFile.exists()) { 120 if (!dataFile.exists()) {
101 return false; 121 checkResult = new Status(Status.Kind.OK, String.format("File named %s is not known in the repository", file));
102 } 122 return checkResult;
103 if (cachedManifest == null) { 123 }
104 int csetRev = repo.getChangelog().getLocalRevision(cset); 124 Nodeid toExtract = null;
105 cachedManifest = new ManifestRevision(null, null); // XXX how about context and cached manifest revisions
106 repo.getManifest().walk(csetRev, csetRev, cachedManifest);
107 // cachedManifest shall be meaningful - changelog.getLocalRevision above ensures we've got version that exists.
108 }
109 Nodeid toExtract = cachedManifest.nodeid(file);
110 try { 125 try {
126 if (cachedManifest == null) {
127 int csetRev = repo.getChangelog().getLocalRevision(cset);
128 cachedManifest = new ManifestRevision(null, null); // XXX how about context and cached manifest revisions
129 repo.getManifest().walk(csetRev, csetRev, cachedManifest);
130 // cachedManifest shall be meaningful - changelog.getLocalRevision above ensures we've got version that exists.
131 }
132 toExtract = cachedManifest.nodeid(file);
111 if (toExtract == null && followRenames) { 133 if (toExtract == null && followRenames) {
112 while (toExtract == null && dataFile.isCopy()) { 134 while (toExtract == null && dataFile.isCopy()) {
113 renamed = true; 135 renamed = true;
114 file = dataFile.getCopySourceName(); 136 file = dataFile.getCopySourceName();
115 dataFile = repo.getFileNode(file); 137 dataFile = repo.getFileNode(file);
116 toExtract = cachedManifest.nodeid(file); 138 toExtract = cachedManifest.nodeid(file);
117 } 139 }
118 } 140 }
141 } catch (HgInvalidControlFileException ex) {
142 checkResult = new Status(Status.Kind.ERROR, "", ex);
143 return checkResult;
119 } catch (HgDataStreamException ex) { 144 } catch (HgDataStreamException ex) {
120 HgInternals.getContext(repo).getLog().warn(getClass(), ex, "Follow copy/rename failed"); 145 checkResult = new Status(Status.Kind.ERROR, "Follow copy/rename failed", ex);
121 // ignore now, however if there's IStatus retval, might report error with reasonable explanation. 146 HgInternals.getContext(repo).getLog().warn(getClass(), ex, checkResult.getMessage());
122 // Perhaps, may add a String reason() method with such info? 147 return checkResult;
123 } 148 }
124 checked = true;
125 if (toExtract != null) { 149 if (toExtract != null) {
126 fileRevision = new HgFileRevision(repo, toExtract, dataFile.getPath()); 150 fileRevision = new HgFileRevision(repo, toExtract, dataFile.getPath());
127 return true; 151 checkResult = new Status(Status.Kind.OK, String.format("File %s, revision %s found at changeset %s", dataFile.getPath(), toExtract.shortNotation(), cset.shortNotation()));
128 } // else String.format("File %s nor its origins were not known at repository %s revision", file, cset.shortNotation()) 152 return checkResult;
129 return false; 153 }
154 checkResult = new Status(Status.Kind.OK, String.format("File %s nor its origins were not known at repository %s revision", file, cset.shortNotation()));
155 return checkResult;
156 }
157
158 /**
159 * Re-get latest check status object
160 */
161 public Status getCheckStatus() {
162 assertCheckRan();
163 return checkResult;
130 } 164 }
131 165
132 /** 166 /**
133 * @return result of the last {@link #check(Path)} call. 167 * @return result of the last {@link #check(Path)} call.
134 */ 168 */
172 assertCheckRan(); 206 assertCheckRan();
173 return fileRevision.getRevision(); 207 return fileRevision.getRevision();
174 } 208 }
175 209
176 private void assertCheckRan() { 210 private void assertCheckRan() {
177 if (!checked) { 211 if (checkResult == null) {
178 throw new HgBadStateException("Shall invoke #check(Path) first"); 212 throw new HgBadStateException("Shall invoke #check(Path) first");
179 } 213 }
180 } 214 }
181 } 215 }