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