146 lines
3.8 KiB
Tcl
146 lines
3.8 KiB
Tcl
#!/usr/bin/tclsh
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#
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# To build a single huge source file holding all of SQLite (or at
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# least the core components - the test harness, shell, and TCL
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# interface are omitted.) 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.) There are a few
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# generated C code files that are also added to the tsrc directory.
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# For example, the "parse.c" and "parse.h" files to implement the
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# the parser are derived from "parse.y" using lemon. And the
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# "keywordhash.h" files is generated by a program named "mkkeywordhash".
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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 mksqlite3c.tcl
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#
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# The amalgamated SQLite code will be written into sqlite3.c
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#
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# Begin by reading the "sqlite3.h" header file. Count the number of lines
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# in this file and extract the version number. That information will be
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# needed in order to generate the header of the amalgamation.
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#
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set in [open tsrc/sqlite3.h]
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set cnt 0
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set VERSION ?????
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while {![eof $in]} {
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set line [gets $in]
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if {$line=="" && [eof $in]} break
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incr cnt
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regexp {#define\s+SQLITE_VERSION\s+"(.*)"} $line all VERSION
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}
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close $in
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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 sqlite3internal.h 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 many private header files from SQLite
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** version $VERSION.
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*/}]
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# These are the header files used by SQLite. The first time any of these
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# files are seen in a #include statement in the C code, include the complete
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# text of the file in-line. The file only needs to be included once.
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#
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foreach hdr {
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btree.h
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btreeInt.h
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hash.h
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hwtime.h
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keywordhash.h
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opcodes.h
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os_common.h
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os.h
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pager.h
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parse.h
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sqlite3ext.h
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sqlite3.h
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sqliteInt.h
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sqliteLimit.h
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vdbe.h
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vdbeInt.h
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} {
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set available_hdr($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 $tail"
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}
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# Process the source files. Process files containing commonly
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# used subroutines first in order to help the compiler find
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# inlining opportunities.
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#
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foreach file {
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sqliteInt.h
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sqlite3.h
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btree.h
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hash.h
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os.h
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pager.h
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parse.h
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sqlite3ext.h
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vdbe.h
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} {
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if {$available_hdr($file)} {
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copy_file tsrc/$file
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}
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}
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close $out
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