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-rw-r--r--editors/awk.c192
1 files changed, 94 insertions, 98 deletions
diff --git a/editors/awk.c b/editors/awk.c
index 0be044e..6833c2f 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -619,18 +619,6 @@ struct globals2 {
G.evaluate__seed = 1; \
} while (0)
-
-/* function prototypes */
-static void handle_special(var *);
-static node *parse_expr(uint32_t);
-static void chain_group(void);
-static var *evaluate(node *, var *);
-static rstream *next_input_file(void);
-static int fmt_num(char *, int, const char *, double, int);
-static int awk_exit(int) NORETURN;
-
-/* ---- error handling ---- */
-
static const char EMSG_UNEXP_EOS[] ALIGN1 = "Unexpected end of string";
static const char EMSG_UNEXP_TOKEN[] ALIGN1 = "Unexpected token";
static const char EMSG_DIV_BY_ZERO[] ALIGN1 = "Division by zero";
@@ -642,10 +630,7 @@ static const char EMSG_UNDEF_FUNC[] ALIGN1 = "Call to undefined function";
static const char EMSG_NO_MATH[] ALIGN1 = "Math support is not compiled in";
static const char EMSG_NEGATIVE_FIELD[] ALIGN1 = "Access to negative field";
-static void zero_out_var(var *vp)
-{
- memset(vp, 0, sizeof(*vp));
-}
+static int awk_exit(int) NORETURN;
static void syntax_error(const char *message) NORETURN;
static void syntax_error(const char *message)
@@ -653,6 +638,11 @@ static void syntax_error(const char *message)
bb_error_msg_and_die("%s:%i: %s", g_progname, g_lineno, message);
}
+static void zero_out_var(var *vp)
+{
+ memset(vp, 0, sizeof(*vp));
+}
+
/* ---- hash stuff ---- */
static unsigned hashidx(const char *name)
@@ -885,10 +875,29 @@ static double my_strtod(char **pp)
/* -------- working with variables (set/get/copy/etc) -------- */
-static xhash *iamarray(var *v)
+static int fmt_num(char *b, int size, const char *format, double n, int int_as_int)
{
- var *a = v;
+ int r = 0;
+ char c;
+ const char *s = format;
+
+ if (int_as_int && n == (long long)n) {
+ r = snprintf(b, size, "%lld", (long long)n);
+ } else {
+ do { c = *s; } while (c && *++s);
+ if (strchr("diouxX", c)) {
+ r = snprintf(b, size, format, (int)n);
+ } else if (strchr("eEfgG", c)) {
+ r = snprintf(b, size, format, n);
+ } else {
+ syntax_error(EMSG_INV_FMT);
+ }
+ }
+ return r;
+}
+static xhash *iamarray(var *a)
+{
while (a->type & VF_CHILD)
a = a->x.parent;
@@ -913,6 +922,8 @@ static var *clrvar(var *v)
return v;
}
+static void handle_special(var *);
+
/* assign string value to variable */
static var *setvar_p(var *v, char *value)
{
@@ -1284,6 +1295,8 @@ static void mk_re_node(const char *s, node *n, regex_t *re)
xregcomp(re + 1, s, REG_EXTENDED | REG_ICASE);
}
+static node *parse_expr(uint32_t);
+
static node *parse_lrparen_list(void)
{
next_token(TC_LPAREN);
@@ -1488,6 +1501,8 @@ static void chain_expr(uint32_t info)
rollback_token();
}
+static void chain_group(void);
+
static node *chain_loop(node *nn)
{
node *n, *n2, *save_brk, *save_cont;
@@ -1770,6 +1785,8 @@ static node *mk_splitter(const char *s, tsplitter *spl)
return n;
}
+static var *evaluate(node *, var *);
+
/* Use node as a regular expression. Supplied with node ptr and regex_t
* storage space. Return ptr to regex (if result points to preg, it should
* be later regfree'd manually).
@@ -2222,27 +2239,6 @@ static int awk_getline(rstream *rsm, var *v)
return r;
}
-static int fmt_num(char *b, int size, const char *format, double n, int int_as_int)
-{
- int r = 0;
- char c;
- const char *s = format;
-
- if (int_as_int && n == (long long)n) {
- r = snprintf(b, size, "%lld", (long long)n);
- } else {
- do { c = *s; } while (c && *++s);
- if (strchr("diouxX", c)) {
- r = snprintf(b, size, format, (int)n);
- } else if (strchr("eEfgG", c)) {
- r = snprintf(b, size, format, n);
- } else {
- syntax_error(EMSG_INV_FMT);
- }
- }
- return r;
-}
-
/* formatted output into an allocated buffer, return ptr to buffer */
#if !ENABLE_FEATURE_AWK_GNU_EXTENSIONS
# define awk_printf(a, b) awk_printf(a)
@@ -2306,7 +2302,7 @@ static char *awk_printf(node *n, int *len)
}
free(fmt);
-// nvfree(tmpvar, 1);
+ //nvfree(tmpvar, 1);
#undef TMPVAR
b = xrealloc(b, i + 1);
@@ -2652,6 +2648,64 @@ static NOINLINE var *exec_builtin(node *op, var *res)
#undef tspl
}
+/* if expr looks like "var=value", perform assignment and return 1,
+ * otherwise return 0 */
+static int is_assignment(const char *expr)
+{
+ char *exprc, *val;
+
+ if (!isalnum_(*expr) || (val = strchr(expr, '=')) == NULL) {
+ return FALSE;
+ }
+
+ exprc = xstrdup(expr);
+ val = exprc + (val - expr);
+ *val++ = '\0';
+
+ unescape_string_in_place(val);
+ setvar_u(newvar(exprc), val);
+ free(exprc);
+ return TRUE;
+}
+
+/* switch to next input file */
+static rstream *next_input_file(void)
+{
+#define rsm (G.next_input_file__rsm)
+#define files_happen (G.next_input_file__files_happen)
+
+ FILE *F;
+ const char *fname, *ind;
+
+ if (rsm.F)
+ fclose(rsm.F);
+ rsm.F = NULL;
+ rsm.pos = rsm.adv = 0;
+
+ for (;;) {
+ if (getvar_i(intvar[ARGIND])+1 >= getvar_i(intvar[ARGC])) {
+ if (files_happen)
+ return NULL;
+ fname = "-";
+ F = stdin;
+ break;
+ }
+ ind = getvar_s(incvar(intvar[ARGIND]));
+ fname = getvar_s(findvar(iamarray(intvar[ARGV]), ind));
+ if (fname && *fname && !is_assignment(fname)) {
+ F = xfopen_stdin(fname);
+ break;
+ }
+ }
+
+ files_happen = TRUE;
+ setvar_s(intvar[FILENAME], fname);
+ rsm.F = F;
+ return &rsm;
+#undef rsm
+#undef files_happen
+}
+
/*
* Evaluate node - the heart of the program. Supplied with subtree
* and place where to store result. Returns ptr to result.
@@ -3338,64 +3392,6 @@ static int awk_exit(int r)
exit(r);
}
-/* if expr looks like "var=value", perform assignment and return 1,
- * otherwise return 0 */
-static int is_assignment(const char *expr)
-{
- char *exprc, *val;
-
- if (!isalnum_(*expr) || (val = strchr(expr, '=')) == NULL) {
- return FALSE;
- }
-
- exprc = xstrdup(expr);
- val = exprc + (val - expr);
- *val++ = '\0';
-
- unescape_string_in_place(val);
- setvar_u(newvar(exprc), val);
- free(exprc);
- return TRUE;
-}
-
-/* switch to next input file */
-static rstream *next_input_file(void)
-{
-#define rsm (G.next_input_file__rsm)
-#define files_happen (G.next_input_file__files_happen)
-
- FILE *F;
- const char *fname, *ind;
-
- if (rsm.F)
- fclose(rsm.F);
- rsm.F = NULL;
- rsm.pos = rsm.adv = 0;
-
- for (;;) {
- if (getvar_i(intvar[ARGIND])+1 >= getvar_i(intvar[ARGC])) {
- if (files_happen)
- return NULL;
- fname = "-";
- F = stdin;
- break;
- }
- ind = getvar_s(incvar(intvar[ARGIND]));
- fname = getvar_s(findvar(iamarray(intvar[ARGV]), ind));
- if (fname && *fname && !is_assignment(fname)) {
- F = xfopen_stdin(fname);
- break;
- }
- }
-
- files_happen = TRUE;
- setvar_s(intvar[FILENAME], fname);
- rsm.F = F;
- return &rsm;
-#undef rsm
-#undef files_happen
-}
-
int awk_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int awk_main(int argc UNUSED_PARAM, char **argv)
{
generated by cgit v1.1 at 2024-11-07 16:03:34 +0000