1 files changed, 116 insertions, 0 deletions
diff --git a/ext/fts2/mkfts2amal.tcl b/ext/fts2/mkfts2amal.tcl
new file mode 100644
index 0000000..5c8d1e9
--- /dev/null
+++ b/ext/fts2/mkfts2amal.tcl
@@ -0,0 +1,116 @@
+#!/usr/bin/tclsh
+#
+# This script builds a single C code file holding all of FTS2 code.
+# The name of the output file is fts2amal.c.  To build this file,
+# first do:
+#
+#      make target_source
+#
+# The make target above moves all of the source code files into
+# a subdirectory named "tsrc".  (This script expects to find the files
+# there and will not work if they are not found.)
+#
+# After the "tsrc" directory has been created and populated, run
+# this script:
+#
+#      tclsh mkfts2amal.tcl
+#
+# The amalgamated FTS2 code will be written into fts2amal.c
+#
+
+# Open the output file and write a header comment at the beginning
+# of the file.
+#
+set out [open fts2amal.c w]
+set today [clock format [clock seconds] -format "%Y-%m-%d %H:%M:%S UTC" -gmt 1]
+puts $out [subst \
+{/******************************************************************************
+** This file is an amalgamation of separate C source files from the SQLite
+** Full Text Search extension 2 (fts2).  By combining all the individual C 
+** code  files into this single large file, the entire code can be compiled 
+** as a one translation unit.  This allows many compilers to do optimizations
+** that would not be possible if the files were compiled separately.  It also
+** makes the code easier to import into other projects.
+**
+** This amalgamation was generated on $today.
+*/}]
+
+# These are the header files used by FTS2.  The first time any of these 
+# files are seen in a #include statement in the C code, include the complete
+# text of the file in-line.  The file only needs to be included once.
+#
+foreach hdr {
+   fts2.h
+   fts2_hash.h
+   fts2_tokenizer.h
+   sqlite3.h
+   sqlite3ext.h
+} {
+  set available_hdr($hdr) 1
+}
+
+# 78 stars used for comment formatting.
+set s78 \
+{*****************************************************************************}
+
+# Insert a comment into the code
+#
+proc section_comment {text} {
+  global out s78
+  set n [string length $text]
+  set nstar [expr {60 - $n}]
+  set stars [string range $s78 0 $nstar]
+  puts $out "/************** $text $stars/"
+}
+
+# Read the source file named $filename and write it into the
+# sqlite3.c output file.  If any #include statements are seen,
+# process them approprately.
+#
+proc copy_file {filename} {
+  global seen_hdr available_hdr out
+  set tail [file tail $filename]
+  section_comment "Begin file $tail"
+  set in [open $filename r]
+  while {![eof $in]} {
+    set line [gets $in]
+    if {[regexp {^#\s*include\s+["<]([^">]+)[">]} $line all hdr]} {
+      if {[info exists available_hdr($hdr)]} {
+        if {$available_hdr($hdr)} {
+          section_comment "Include $hdr in the middle of $tail"
+          copy_file tsrc/$hdr
+          section_comment "Continuing where we left off in $tail"
+        }
+      } elseif {![info exists seen_hdr($hdr)]} {
+        set seen_hdr($hdr) 1
+        puts $out $line
+      }
+    } elseif {[regexp {^#ifdef __cplusplus} $line]} {
+      puts $out "#if 0"
+    } elseif {[regexp {^#line} $line]} {
+      # Skip #line directives.
+    } else {
+      puts $out $line
+    }
+  }
+  close $in
+  section_comment "End of $tail"
+}
+
+
+# Process the source files.  Process files containing commonly
+# used subroutines first in order to help the compiler find
+# inlining opportunities.
+#
+foreach file {
+   fts2.c
+   fts2_hash.c
+   fts2_porter.c
+   fts2_tokenizer.c
+   fts2_tokenizer1.c
+   fts2_icu.c
+} {
+  copy_file tsrc/$file
+}
+
+close $out