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authorDenis Vlasenko2007-07-18 18:31:11 +0000
committerDenis Vlasenko2007-07-18 18:31:11 +0000
commitb78c782c85705494634a936f6a9b0c6fcaf0860a (patch)
treef0d3440f7acc4b6fd25dcc2081c30f4146da1d3a
parent91afdf8096c3f3e434686d1b585ab5cde72c9f03 (diff)
downloadbusybox-b78c782c85705494634a936f6a9b0c6fcaf0860a.zip
busybox-b78c782c85705494634a936f6a9b0c6fcaf0860a.tar.gz
awk: style fixes; remove one xstrdup/free pair; testsuite
-rw-r--r--editors/awk.c30
1 files changed, 17 insertions, 13 deletions
diff --git a/editors/awk.c b/editors/awk.c
index 940a794..c087a5d 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -600,7 +600,7 @@ static void *hash_find(xhash *hash, const char *name)
int l;
hi = hash_search(hash, name);
- if (! hi) {
+ if (!hi) {
if (++hash->nel / hash->csize > 10)
hash_rebuild(hash);
@@ -1339,7 +1339,7 @@ static void chain_group(void)
n3 = parse_expr(TC_SEQTERM);
n = chain_loop(n3);
n->l.n = n2;
- if (! n2)
+ if (!n2)
n->info = OC_EXEC;
}
break;
@@ -1446,7 +1446,7 @@ static node *mk_splitter(const char *s, tsplitter *spl)
n = &spl->n;
if ((n->info & OPCLSMASK) == OC_REGEXP) {
regfree(re);
- regfree(ire);
+ regfree(ire); // TODO: nuke ire, use re+1?
}
if (strlen(s) > 1) {
mk_re_node(s, n, re);
@@ -1511,7 +1511,7 @@ static int awk_split(const char *s, node *spl, char **slist)
int l, n = 0;
char c[4];
char *s1;
- regmatch_t pmatch[2];
+ regmatch_t pmatch[2]; // TODO: why [2]? [1] is enough...
/* in worst case, each char would be a separate field */
*slist = s1 = xzalloc(strlen(s) * 2 + 3);
@@ -1732,7 +1732,7 @@ static int awk_getline(rstream *rsm, var *v)
c = (char) rsplitter.n.info;
rp = 0;
- if (! m) qrealloc(&m, 256, &size);
+ if (!m) qrealloc(&m, 256, &size);
do {
b = m + a;
so = eo = p;
@@ -1748,7 +1748,7 @@ static int awk_getline(rstream *rsm, var *v)
}
} else if (c != '\0') {
s = strchr(b+pp, c);
- if (! s) s = memchr(b+pp, '\0', p - pp);
+ if (!s) s = memchr(b+pp, '\0', p - pp);
if (s) {
so = eo = s-b;
eo++;
@@ -1900,8 +1900,8 @@ static int awk_sub(node *rn, const char *repl, int nm, var *src, var *dest, int
regex_t sreg, *re;
re = as_regex(rn, &sreg);
- if (! src) src = intvar[F0];
- if (! dest) dest = intvar[F0];
+ if (!src) src = intvar[F0];
+ if (!dest) dest = intvar[F0];
i = di = 0;
sp = getvar_s(src);
@@ -1946,7 +1946,8 @@ static int awk_sub(node *rn, const char *repl, int nm, var *src, var *dest, int
sp += eo;
if (i == nm) break;
if (eo == so) {
- if (! (ds[di++] = *sp++)) break;
+ ds[di] = *sp++;
+ if (!ds[di++]) break;
}
}
@@ -2797,13 +2798,16 @@ int awk_main(int argc, char **argv)
/* Huh, people report that sometimes environ is NULL. Oh well. */
if (environ) for (envp = environ; *envp; envp++) {
- char *s = xstrdup(*envp);
+ /* environ is writable, thus we don't strdup it needlessly */
+ char *s = *envp;
char *s1 = strchr(s, '=');
if (s1) {
- *s1++ = '\0';
- setvar_u(findvar(iamarray(intvar[ENVIRON]), s), s1);
+ *s1 = '\0';
+ /* Both findvar and setvar_u take const char*
+ * as 2nd arg -> environment is not trashed */
+ setvar_u(findvar(iamarray(intvar[ENVIRON]), s), s1 + 1);
+ *s1 = '=';
}
- free(s);
}
opt_complementary = "v::";
opt = getopt32(argc, argv, "F:v:f:W:", &opt_F, &opt_v, &g_progname, &opt_W);