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83 lines
2 KiB
Tcl
83 lines
2 KiB
Tcl
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#!/usr/bin/tclsh
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#
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# This script splits the sqlite3.c amalgamated source code files into
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# several smaller files such that no single files is more than a fixed
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# number of lines in length (32k or 64k). Each of the split out files
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# is #include-ed by the master file.
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#
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# Splitting files up this way allows them to be used with older compilers
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# that cannot handle really long source files.
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#
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set MAX 32768 ;# Maximum number of lines per file.
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set BEGIN {^/\*+ Begin file ([a-zA-Z0-9_.]+) \*+/}
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set END {^/\*+ End of %s \*+/}
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set in [open sqlite3.c]
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set out1 [open sqlite3-all.c w]
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# Copy the header from sqlite3.c into sqlite3-all.c
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#
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while {[gets $in line]} {
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if {[regexp $BEGIN $line]} break
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puts $out1 $line
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}
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# Gather the complete content of a file into memory. Store the
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# content in $bufout. Store the number of lines is $nout
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#
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proc gather_one_file {firstline bufout nout} {
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regexp $::BEGIN $firstline all filename
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set end [format $::END $filename]
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upvar $bufout buf $nout n
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set buf $firstline\n
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global in
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set n 0
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while {[gets $in line]>=0} {
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incr n
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append buf $line\n
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if {[regexp $end $line]} break
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}
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}
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# Write a big chunk of text in to an auxiliary file "sqlite3-NNN.c".
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# Also add an appropriate #include to sqlite3-all.c
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#
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set filecnt 0
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proc write_one_file {content} {
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global filecnt
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incr filecnt
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set out [open sqlite3-$filecnt.c w]
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puts -nonewline $out $content
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close $out
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puts $::out1 "#include \"sqlite3-$filecnt.c\""
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}
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# Continue reading input. Store chunks in separate files and add
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# the #includes to the main sqlite3-all.c file as necessary to reference
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# the extra chunks.
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#
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set all {}
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set N 0
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while {[regexp $BEGIN $line]} {
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set buf {}
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set n 0
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gather_one_file $line buf n
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if {$n+$N>=$MAX} {
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write_one_file $all
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set all {}
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set N 0
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}
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append all $buf
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incr N $n
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while {[gets $in line]>=0} {
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if {[regexp $BEGIN $line]} break
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puts $out1 $line
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}
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}
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if {$N>0} {
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write_one_file $all
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}
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close $out1
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close $in
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