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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 /str.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 'str.h')
-rw-r--r--str.h35
1 files changed, 35 insertions, 0 deletions
diff --git a/str.h b/str.h
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+/* $Header: str.h,v 1.0 87/12/18 13:06:26 root Exp $
+ *
+ * $Log: str.h,v $
+ * Revision 1.0 87/12/18 13:06:26 root
+ * Initial revision
+ *
+ */
+
+struct string {
+ char * str_ptr; /* pointer to malloced string */
+ double str_nval; /* numeric value, if any */
+ int str_len; /* allocated size */
+ int str_cur; /* length of str_ptr as a C string */
+ union {
+ STR *str_next; /* while free, link to next free str */
+ STAB *str_magic; /* while in use, ptr to magic stab, if any */
+ } str_link;
+ char str_pok; /* state of str_ptr */
+ char str_nok; /* state of str_nval */
+};
+
+#define Nullstr Null(STR*)
+
+/* the following macro updates any magic values this str is associated with */
+
+#define STABSET(x) (x->str_link.str_magic && stabset(x->str_link.str_magic,x))
+
+EXT STR **tmps_list;
+EXT long tmps_max INIT(-1);
+
+char *str_2ptr();
+double str_2num();
+STR *str_static();
+STR *str_make();
+STR *str_nmake();