| #!/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 |