sanitize lupdate's behavior regarding SUBDIRS projects

previously, the semantics of nesting projects were pretty bizarre:
the list of TS files grew ever as the subdirs were visited. the
source files otoh were cleared for every project. this meant that
some TS files were updated over and over again, each time with different
data.
this is obviously total nonsense, so there is no compatibilty to keep.
so here come the new semantics:
- each project is scanned separately. it has separate include paths and
  may override the inherited CODECFORSRC.
- the messages from all sub-projects are merged
- if a sub-project has a TRANSLATIONS entry, it is "detached" from its
  parent project, thus starting an own merged translator. it is also
  possible to name an empty set of TS files to simply exclude the
  sub-project.
- CODECFORTR can be specified in each project with TRANSLATIONS
- if TS files are specified on the command line, they override
  TRANSLATIONS from the top level project and stop processing of
  detached projects alltogether. if multiple top-level projects are
  specified, they are all merged.

this is somewhat slower, as now includes are re-scanned per project,
while previously all sources were simply accumulated and scanned as one
project. this can be fixed retroactively if needed.

23 files changed, 122 insertions, 1 deletions

diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_full/expectedoutput.txt b/tests/auto/linguist/lupdate/testdata/good/recurse_full/expectedoutput.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_full/expectedoutput.txt
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_full/lupdatecmd b/tests/auto/linguist/lupdate/testdata/good/recurse_full/lupdatecmd
new file mode 100644
index 0000000..40987e2
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_full/lupdatecmd
@@ -0,0 +1,2 @@
+TRANSLATION: project.ts project_sub.ts
+cd ../../subdirs_full
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_full/project.ts.result b/tests/auto/linguist/lupdate/testdata/good/recurse_full/project.ts.result
new file mode 100644
index 0000000..7d9a6f4
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_full/project.ts.result
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.0">
+<context>
+    <name>subdir1</name>
+    <message>
+        <location filename="subdir1/main.cpp" line="45"/>
+        <source>minimal test</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>subsub1</name>
+    <message>
+        <location filename="subdir2/subsub1/main.cpp" line="45"/>
+        <source>minimal test</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+</TS>
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_full/project_sub.ts.result b/tests/auto/linguist/lupdate/testdata/good/recurse_full/project_sub.ts.result
new file mode 100644
index 0000000..cddb963
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_full/project_sub.ts.result
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.0">
+<defaultcodec>ISO-8859-2</defaultcodec>
+<context>
+    <name>subsub2</name>
+    <message>
+        <location filename="subdir2/subsub2/main.cpp" line="45"/>
+        <source>minimal test</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+</TS>
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/expectedoutput.txt b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/expectedoutput.txt
new file mode 100644
index 0000000..fd7a158
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/expectedoutput.txt
@@ -0,0 +1,2 @@
+lupdate warning: TS files from command line will override TRANSLATIONS in project\.pro\.
+lupdate warning: TS files from command line prevent recursing into .*/subdir2/subsub2/subsub2\.pro\.
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/lupdatecmd b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/lupdatecmd
new file mode 100644
index 0000000..33296c3
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/lupdatecmd
@@ -0,0 +1,3 @@
+TRANSLATION: project.ts project_sub.ts
+cd ../../subdirs_full
+lupdate project.pro -ts project.ts
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/project.ts.result b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/project.ts.result
new file mode 100644
index 0000000..7d9a6f4
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/project.ts.result
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.0">
+<context>
+    <name>subdir1</name>
+    <message>
+        <location filename="subdir1/main.cpp" line="45"/>
+        <source>minimal test</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>subsub1</name>
+    <message>
+        <location filename="subdir2/subsub1/main.cpp" line="45"/>
+        <source>minimal test</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+</TS>
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/project_sub.ts.before b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/project_sub.ts.before
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/project_sub.ts.before
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/project_sub.ts.result b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/project_sub.ts.result
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts/project_sub.ts.result
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts_join/expectedoutput.txt b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts_join/expectedoutput.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts_join/expectedoutput.txt
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts_join/lupdatecmd b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts_join/lupdatecmd
new file mode 100644
index 0000000..628acc0
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts_join/lupdatecmd
@@ -0,0 +1,2 @@
+cd ../../subdirs_full
+lupdate subdir1/subdir1.pro subdir2/subsub1/subsub1.pro -ts project.ts
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts_join/project.ts.result b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts_join/project.ts.result
new file mode 100644
index 0000000..7d9a6f4
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_full_ts_join/project.ts.result
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.0">
+<context>
+    <name>subdir1</name>
+    <message>
+        <location filename="subdir1/main.cpp" line="45"/>
+        <source>minimal test</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>subsub1</name>
+    <message>
+        <location filename="subdir2/subsub1/main.cpp" line="45"/>
+        <source>minimal test</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+</TS>
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_part/expectedoutput.txt b/tests/auto/linguist/lupdate/testdata/good/recurse_part/expectedoutput.txt
new file mode 100644
index 0000000..808db18
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_part/expectedoutput.txt
@@ -0,0 +1 @@
+lupdate warning: no TS files specified\. Only diagnostics will be produced for 'project\.pro'\.
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_part/lupdatecmd b/tests/auto/linguist/lupdate/testdata/good/recurse_part/lupdatecmd
new file mode 100644
index 0000000..3e15bc7
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_part/lupdatecmd
@@ -0,0 +1,2 @@
+TRANSLATION: project.ts project_sub.ts
+cd ../../subdirs_part
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_part/project.ts.before b/tests/auto/linguist/lupdate/testdata/good/recurse_part/project.ts.before
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_part/project.ts.before
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_part/project.ts.result b/tests/auto/linguist/lupdate/testdata/good/recurse_part/project.ts.result
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_part/project.ts.result
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_part/project_sub.ts.result b/tests/auto/linguist/lupdate/testdata/good/recurse_part/project_sub.ts.result
new file mode 100644
index 0000000..cddb963
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_part/project_sub.ts.result
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.0">
+<defaultcodec>ISO-8859-2</defaultcodec>
+<context>
+    <name>subsub2</name>
+    <message>
+        <location filename="subdir2/subsub2/main.cpp" line="45"/>
+        <source>minimal test</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+</TS>
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/expectedoutput.txt b/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/expectedoutput.txt
new file mode 100644
index 0000000..b904390
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/expectedoutput.txt
@@ -0,0 +1 @@
+lupdate warning: TS files from command line prevent recursing into .*/subdir2/subsub2/subsub2\.pro\.
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/lupdatecmd b/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/lupdatecmd
new file mode 100644
index 0000000..41bfcec
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/lupdatecmd
@@ -0,0 +1,3 @@
+TRANSLATION: project.ts project_sub.ts
+cd ../../subdirs_part
+lupdate project.pro -ts project.ts
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/project.ts.result b/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/project.ts.result
new file mode 100644
index 0000000..7d9a6f4
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/project.ts.result
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.0">
+<context>
+    <name>subdir1</name>
+    <message>
+        <location filename="subdir1/main.cpp" line="45"/>
+        <source>minimal test</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>subsub1</name>
+    <message>
+        <location filename="subdir2/subsub1/main.cpp" line="45"/>
+        <source>minimal test</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+</TS>
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/project_sub.ts.before b/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/project_sub.ts.before
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/project_sub.ts.before
diff --git a/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/project_sub.ts.result b/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/project_sub.ts.result
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/auto/linguist/lupdate/testdata/good/recurse_part_ts/project_sub.ts.result
diff --git a/tests/auto/linguist/lupdate/testdata/good/reloutput/lupdatecmd b/tests/auto/linguist/lupdate/testdata/good/reloutput/lupdatecmd
index da6103f..90f609b 100644
--- a/tests/auto/linguist/lupdate/testdata/good/reloutput/lupdatecmd
+++ b/tests/auto/linguist/lupdate/testdata/good/reloutput/lupdatecmd
@@ -1,2 +1 @@
 TRANSLATION: translations/project.ts
-lupdate project.pro -ts translations/project.ts