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authorLarry Wall <lwall@jpl-devvax.jpl.nasa.gov>1987-12-18 00:00:00 +0000
committerLarry Wall <lwall@jpl-devvax.jpl.nasa.gov>1987-12-18 00:00:00 +0000
commit8d063cd8450e59ea1c611a2f4f5a21059a2804f1 (patch)
tree9bba34a99f94e47746e40ffe1419151779d8a4fc /stab.h
downloadperl-8d063cd8450e59ea1c611a2f4f5a21059a2804f1.tar.gz
a "replacement" for awk and sedperl-1.0
[ Perl is kind of designed to make awk and sed semi-obsolete. This posting will include the first 10 patches after the main source. The following description is lifted from Larry's manpage. --r$ ] Perl is a interpreted language optimized for scanning arbitrary text files, extracting information from those text files, and printing reports based on that information. It's also a good language for many system management tasks. The language is intended to be practical (easy to use, efficient, complete) rather than beautiful (tiny, elegant, minimal). It combines (in the author's opinion, anyway) some of the best features of C, sed, awk, and sh, so people familiar with those languages should have little difficulty with it. (Language historians will also note some vestiges of csh, Pascal, and even BASIC-PLUS.) Expression syntax corresponds quite closely to C expression syntax. If you have a problem that would ordinarily use sed or awk or sh, but it exceeds their capabilities or must run a little faster, and you don't want to write the silly thing in C, then perl may be for you. There are also translators to turn your sed and awk scripts into perl scripts.
Diffstat (limited to 'stab.h')
-rw-r--r--stab.h58
1 files changed, 58 insertions, 0 deletions
diff --git a/stab.h b/stab.h
new file mode 100644
index 0000000000..cd38d6d990
--- /dev/null
+++ b/stab.h
@@ -0,0 +1,58 @@
+/* $Header: stab.h,v 1.0 87/12/18 13:06:18 root Exp $
+ *
+ * $Log: stab.h,v $
+ * Revision 1.0 87/12/18 13:06:18 root
+ * Initial revision
+ *
+ */
+
+struct stab {
+ struct stab *stab_next;
+ char *stab_name;
+ STR *stab_val;
+ struct stio *stab_io;
+ FCMD *stab_form;
+ ARRAY *stab_array;
+ HASH *stab_hash;
+ CMD *stab_sub;
+ char stab_flags;
+};
+
+#define SF_VMAGIC 1 /* call routine to dereference STR val */
+
+struct stio {
+ FILE *fp;
+ long lines;
+ long page;
+ long page_len;
+ long lines_left;
+ char *top_name;
+ STAB *top_stab;
+ char *fmt_name;
+ STAB *fmt_stab;
+ char type;
+ char flags;
+};
+
+#define IOF_ARGV 1 /* this fp iterates over ARGV */
+#define IOF_START 2 /* check for null ARGV and substitute '-' */
+#define IOF_FLUSH 4 /* this fp wants a flush after write op */
+
+#define Nullstab Null(STAB*)
+
+#define STAB_STR(s) (tmpstab = (s), tmpstab->stab_flags & SF_VMAGIC ? stab_str(tmpstab) : tmpstab->stab_val)
+#define STAB_GET(s) (tmpstab = (s), str_get(tmpstab->stab_flags & SF_VMAGIC ? stab_str(tmpstab) : tmpstab->stab_val))
+#define STAB_GNUM(s) (tmpstab = (s), str_gnum(tmpstab->stab_flags & SF_VMAGIC ? stab_str(tmpstab) : tmpstab->stab_val))
+
+EXT STAB *tmpstab;
+
+EXT STAB *stab_index[128];
+
+EXT char *envname; /* place for ENV name being assigned--gross cheat */
+EXT char *signame; /* place for SIG name being assigned--gross cheat */
+
+EXT int statusvalue;
+EXT int subsvalue;
+
+STAB *aadd();
+STAB *hadd();