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1 #!/usr/bin/tclsh | |
2 # | |
3 # This script builds a single C code file holding all of FTS2 code. | |
4 # The name of the output file is fts2amal.c. To build this file, | |
5 # first do: | |
6 # | |
7 # make target_source | |
8 # | |
9 # The make target above moves all of the source code files into | |
10 # a subdirectory named "tsrc". (This script expects to find the files | |
11 # there and will not work if they are not found.) | |
12 # | |
13 # After the "tsrc" directory has been created and populated, run | |
14 # this script: | |
15 # | |
16 # tclsh mkfts2amal.tcl | |
17 # | |
18 # The amalgamated FTS2 code will be written into fts2amal.c | |
19 # | |
20 | |
21 # Open the output file and write a header comment at the beginning | |
22 # of the file. | |
23 # | |
24 set out [open fts2amal.c w] | |
25 set today [clock format [clock seconds] -format "%Y-%m-%d %H:%M:%S UTC" -gmt 1] | |
26 puts $out [subst \ | |
27 {/****************************************************************************** | |
28 ** This file is an amalgamation of separate C source files from the SQLite | |
29 ** Full Text Search extension 2 (fts2). By combining all the individual C | |
30 ** code files into this single large file, the entire code can be compiled | |
31 ** as a one translation unit. This allows many compilers to do optimizations | |
32 ** that would not be possible if the files were compiled separately. It also | |
33 ** makes the code easier to import into other projects. | |
34 ** | |
35 ** This amalgamation was generated on $today. | |
36 */}] | |
37 | |
38 # These are the header files used by FTS2. The first time any of these | |
39 # files are seen in a #include statement in the C code, include the complete | |
40 # text of the file in-line. The file only needs to be included once. | |
41 # | |
42 foreach hdr { | |
43 fts2.h | |
44 fts2_hash.h | |
45 fts2_tokenizer.h | |
46 sqlite3.h | |
47 sqlite3ext.h | |
48 } { | |
49 set available_hdr($hdr) 1 | |
50 } | |
51 | |
52 # 78 stars used for comment formatting. | |
53 set s78 \ | |
54 {*****************************************************************************} | |
55 | |
56 # Insert a comment into the code | |
57 # | |
58 proc section_comment {text} { | |
59 global out s78 | |
60 set n [string length $text] | |
61 set nstar [expr {60 - $n}] | |
62 set stars [string range $s78 0 $nstar] | |
63 puts $out "/************** $text $stars/" | |
64 } | |
65 | |
66 # Read the source file named $filename and write it into the | |
67 # sqlite3.c output file. If any #include statements are seen, | |
68 # process them approprately. | |
69 # | |
70 proc copy_file {filename} { | |
71 global seen_hdr available_hdr out | |
72 set tail [file tail $filename] | |
73 section_comment "Begin file $tail" | |
74 set in [open $filename r] | |
75 while {![eof $in]} { | |
76 set line [gets $in] | |
77 if {[regexp {^#\s*include\s+["<]([^">]+)[">]} $line all hdr]} { | |
78 if {[info exists available_hdr($hdr)]} { | |
79 if {$available_hdr($hdr)} { | |
80 section_comment "Include $hdr in the middle of $tail" | |
81 copy_file tsrc/$hdr | |
82 section_comment "Continuing where we left off in $tail" | |
83 } | |
84 } elseif {![info exists seen_hdr($hdr)]} { | |
85 set seen_hdr($hdr) 1 | |
86 puts $out $line | |
87 } | |
88 } elseif {[regexp {^#ifdef __cplusplus} $line]} { | |
89 puts $out "#if 0" | |
90 } elseif {[regexp {^#line} $line]} { | |
91 # Skip #line directives. | |
92 } else { | |
93 puts $out $line | |
94 } | |
95 } | |
96 close $in | |
97 section_comment "End of $tail" | |
98 } | |
99 | |
100 | |
101 # Process the source files. Process files containing commonly | |
102 # used subroutines first in order to help the compiler find | |
103 # inlining opportunities. | |
104 # | |
105 foreach file { | |
106 fts2.c | |
107 fts2_hash.c | |
108 fts2_porter.c | |
109 fts2_tokenizer.c | |
110 fts2_tokenizer1.c | |
111 fts2_icu.c | |
112 } { | |
113 copy_file tsrc/$file | |
114 } | |
115 | |
116 close $out | |
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