busybox/patches/busybox-1.19.0-sed.patch

--- busybox-1.19.0/editors/sed.c
+++ busybox-1.19.0-sed/editors/sed.c
@@ -75,6 +75,13 @@
 #include "libbb.h"
 #include "xregex.h"
 
+#if 0
+# define dbg(...) bb_error_msg(__VA_ARGS__)
+#else
+# define dbg(...) ((void)0)
+#endif
+
+
 enum {
 	OPT_in_place = 1 << 0,
 };
@@ -89,6 +96,7 @@ typedef struct sed_cmd_s {
 	regex_t *end_match;     /* sed -e '/match/,/end_match/cmd' */
 	regex_t *sub_match;     /* For 's/sub_match/string/' */
 	int beg_line;           /* 'sed 1p'   0 == apply commands to all lines */
+	int beg_line_orig;      /* copy of the above, needed for -i */
 	int end_line;           /* 'sed 1,3p' 0 == one line only. -1 = last line ($) */
 
 	FILE *sw_file;          /* File (sw) command writes to, -1 for none. */
@@ -123,7 +131,7 @@ struct globals {
 	regex_t *previous_regex_ptr;
 
 	/* linked list of sed commands */
-	sed_cmd_t sed_cmd_head, *sed_cmd_tail;
+	sed_cmd_t *sed_cmd_head, **sed_cmd_tail;
 
 	/* Linked list of append lines */
 	llist_t *append_head;
@@ -148,7 +156,7 @@ struct BUG_G_too_big {
 #if ENABLE_FEATURE_CLEAN_UP
 static void sed_free_and_close_stuff(void)
 {
-	sed_cmd_t *sed_cmd = G.sed_cmd_head.next;
+	sed_cmd_t *sed_cmd = G.sed_cmd_head;
 
 	llist_free(G.append_head, free);
 
@@ -599,6 +607,7 @@ static void add_cmd(const char *cmdstr)
 
 		/* first part (if present) is an address: either a '$', a number or a /regex/ */
 		cmdstr += get_address(cmdstr, &sed_cmd->beg_line, &sed_cmd->beg_match);
+		sed_cmd->beg_line_orig = sed_cmd->beg_line;
 
 		/* second part (if present) will begin with a comma */
 		if (*cmdstr == ',') {
@@ -630,8 +639,8 @@ static void add_cmd(const char *cmdstr)
 		cmdstr = parse_cmd_args(sed_cmd, cmdstr);
 
 		/* Add the command to the command array */
-		G.sed_cmd_tail->next = sed_cmd;
-		G.sed_cmd_tail = G.sed_cmd_tail->next;
+		*G.sed_cmd_tail = sed_cmd;
+		G.sed_cmd_tail = &sed_cmd->next;
 	}
 
 	/* If we glued multiple lines together, free the memory. */
@@ -777,7 +786,7 @@ static sed_cmd_t *branch_to(char *label)
 {
 	sed_cmd_t *sed_cmd;
 
-	for (sed_cmd = G.sed_cmd_head.next; sed_cmd; sed_cmd = sed_cmd->next) {
+	for (sed_cmd = G.sed_cmd_head; sed_cmd; sed_cmd = sed_cmd->next) {
 		if (sed_cmd->cmd == ':' && sed_cmd->string && !strcmp(sed_cmd->string, label)) {
 			return sed_cmd;
 		}
@@ -953,24 +962,24 @@ static void process_files(void)
 
 	/* For every line, go through all the commands */
  restart:
-	for (sed_cmd = G.sed_cmd_head.next; sed_cmd; sed_cmd = sed_cmd->next) {
+	for (sed_cmd = G.sed_cmd_head; sed_cmd; sed_cmd = sed_cmd->next) {
 		int old_matched, matched;
 
 		old_matched = sed_cmd->in_match;
 
 		/* Determine if this command matches this line: */
 
-		//bb_error_msg("match1:%d", sed_cmd->in_match);
-		//bb_error_msg("match2:%d", (!sed_cmd->beg_line && !sed_cmd->end_line
-		//		&& !sed_cmd->beg_match && !sed_cmd->end_match));
-		//bb_error_msg("match3:%d", (sed_cmd->beg_line > 0
-		//	&& (sed_cmd->end_line || sed_cmd->end_match
-		//	    ? (sed_cmd->beg_line <= linenum)
-		//	    : (sed_cmd->beg_line == linenum)
-		//	    )
-		//	)
-		//bb_error_msg("match4:%d", (beg_match(sed_cmd, pattern_space)));
-		//bb_error_msg("match5:%d", (sed_cmd->beg_line == -1 && next_line == NULL));
+		dbg("match1:%d", sed_cmd->in_match);
+		dbg("match2:%d", (!sed_cmd->beg_line && !sed_cmd->end_line
+				&& !sed_cmd->beg_match && !sed_cmd->end_match));
+		dbg("match3:%d", (sed_cmd->beg_line > 0
+			&& (sed_cmd->end_line || sed_cmd->end_match
+			    ? (sed_cmd->beg_line <= linenum)
+			    : (sed_cmd->beg_line == linenum)
+			    )
+			));
+		dbg("match4:%d", (beg_match(sed_cmd, pattern_space)));
+		dbg("match5:%d", (sed_cmd->beg_line == -1 && next_line == NULL));
 
 		/* Are we continuing a previous multi-line match? */
 		sed_cmd->in_match = sed_cmd->in_match
@@ -981,7 +990,14 @@ static void process_files(void)
 			|| (sed_cmd->beg_line > 0
 			    && (sed_cmd->end_line || sed_cmd->end_match
 				  /* note: even if end is numeric and is < linenum too,
-				   * GNU sed matches! We match too */
+				   * GNU sed matches! We match too, therefore we don't
+				   * check here that linenum <= end.
+				   * Example:
+				   * printf '1\n2\n3\n4\n' | sed -n '1{N;N;d};1p;2,3p;3p;4p'
+				   * first three input lines are deleted;
+				   * 4th line is matched and printed
+				   * by "2,3" (!) and by "4" ranges
+				   */
 				? (sed_cmd->beg_line <= linenum)    /* N,end */
 				: (sed_cmd->beg_line == linenum)    /* N */
 				)
@@ -994,16 +1010,14 @@ static void process_files(void)
 		/* Snapshot the value */
 		matched = sed_cmd->in_match;
 
-		//bb_error_msg("cmd:'%c' matched:%d beg_line:%d end_line:%d linenum:%d",
-		//sed_cmd->cmd, matched, sed_cmd->beg_line, sed_cmd->end_line, linenum);
+		dbg("cmd:'%c' matched:%d beg_line:%d end_line:%d linenum:%d",
+			sed_cmd->cmd, matched, sed_cmd->beg_line, sed_cmd->end_line, linenum);
 
 		/* Is this line the end of the current match? */
 
 		if (matched) {
 			/* once matched, "n,xxx" range is dead, disabling it */
-			if (sed_cmd->beg_line > 0
-			 && !(option_mask32 & OPT_in_place) /* but not for -i */
-			) {
+			if (sed_cmd->beg_line > 0) {
 				sed_cmd->beg_line = -2;
 			}
 			sed_cmd->in_match = !(
@@ -1017,7 +1031,8 @@ static void process_files(void)
 				/* or does this line matches our last address regex */
 				|| (sed_cmd->end_match && old_matched
 				     && (regexec(sed_cmd->end_match,
-				                 pattern_space, 0, NULL, 0) == 0))
+				                 pattern_space, 0, NULL, 0) == 0)
+				)
 			);
 		}
 
@@ -1407,11 +1422,12 @@ int sed_main(int argc UNUSED_PARAM, char
 		add_input_file(stdin);
 	} else {
 		int i;
-		FILE *file;
 
 		for (i = 0; argv[i]; i++) {
 			struct stat statbuf;
 			int nonstdoutfd;
+			FILE *file;
+			sed_cmd_t *sed_cmd;
 
 			if (LONE_DASH(argv[i]) && !(opt & OPT_in_place)) {
 				add_input_file(stdin);
@@ -1423,11 +1439,13 @@ int sed_main(int argc UNUSED_PARAM, char
 				status = EXIT_FAILURE;
 				continue;
 			}
+			add_input_file(file);
 			if (!(opt & OPT_in_place)) {
-				add_input_file(file);
 				continue;
 			}
 
+			/* -i: process each FILE separately: */
+
 			G.outname = xasprintf("%sXXXXXX", argv[i]);
 			nonstdoutfd = xmkstemp(G.outname);
 			G.nonstdout = xfdopen_for_write(nonstdoutfd);
@@ -1438,15 +1456,20 @@ int sed_main(int argc UNUSED_PARAM, char
 			 * but GNU sed 4.2.1 does not preserve them either */
 			fchmod(nonstdoutfd, statbuf.st_mode);
 			fchown(nonstdoutfd, statbuf.st_uid, statbuf.st_gid);
-			add_input_file(file);
+
 			process_files();
 			fclose(G.nonstdout);
-
 			G.nonstdout = stdout;
+
 			/* unlink(argv[i]); */
 			xrename(G.outname, argv[i]);
 			free(G.outname);
 			G.outname = NULL;
+
+			/* Re-enable disabled range matches */
+			for (sed_cmd = G.sed_cmd_head; sed_cmd; sed_cmd = sed_cmd->next) {
+				sed_cmd->beg_line = sed_cmd->beg_line_orig;
+			}
 		}
 		/* Here, to handle "sed 'cmds' nonexistent_file" case we did:
 		 * if (G.current_input_file >= G.input_file_count)
--- busybox-1.19.0/testsuite/sed.tests
+++ busybox-1.19.0-sed/testsuite/sed.tests
@@ -6,7 +6,7 @@
 
 . ./testing.sh
 
-# testing "description" "arguments" "result" "infile" "stdin"
+# testing "description" "commands" "result" "infile" "stdin"
 
 # Corner cases
 testing "sed no files (stdin)" 'sed ""' "hello\n" "" "hello\n"
@@ -225,7 +225,7 @@ testing "sed s/xxx/[/" "sed -e 's/xxx/[/
 #testing "sed -g (exhaustive)" "sed -e 's/[[:space:]]*/,/g'" ",1,2,3,4,5," \
 #	"" "12345"
 
-# testing "description" "arguments" "result" "infile" "stdin"
+# testing "description" "commands" "result" "infile" "stdin"
 
 testing "sed n command must reset 'substituted' bit" \
 	"sed 's/1/x/;T;n;: next;s/3/y/;t quit;n;b next;: quit;q'" \
@@ -291,6 +291,10 @@ testing "sed understands \r" \
 	"sed 's/r/\r/'" \
 	"\rrr\n" "" "rrr\n"
 
-# testing "description" "arguments" "result" "infile" "stdin"
+testing "sed -i finishes ranges correctly" \
+	"sed '1,2d' -i input; echo \$?; cat input" \
+	"0\n3\n4\n" "1\n2\n3\n4\n" ""
+
+# testing "description" "commands" "result" "infile" "stdin"
 
 exit $FAILCOUNT
1	--- busybox-1.19.0/editors/sed.c
2	+++ busybox-1.19.0-sed/editors/sed.c
3	@@ -75,6 +75,13 @@
4	#include "libbb.h"
5	#include "xregex.h"
6
7	+#if 0
8	+# define dbg(...) bb_error_msg(__VA_ARGS__)
9	+#else
10	+# define dbg(...) ((void)0)
11	+#endif
12	+
13	+
14	enum {
15	OPT_in_place = 1 << 0,
16	};
17	@@ -89,6 +96,7 @@ typedef struct sed_cmd_s {
18	regex_t end_match; / sed -e '/match/,/end_match/cmd' */
19	regex_t sub_match; / For 's/sub_match/string/' */
20	int beg_line; /* 'sed 1p' 0 == apply commands to all lines */
21	+ int beg_line_orig; /* copy of the above, needed for -i */
22	int end_line; /* 'sed 1,3p' 0 == one line only. -1 = last line ($) */
23
24	FILE sw_file; / File (sw) command writes to, -1 for none. */
25	@@ -123,7 +131,7 @@ struct globals {
26	regex_t *previous_regex_ptr;
27
28	/* linked list of sed commands */
29	- sed_cmd_t sed_cmd_head, *sed_cmd_tail;
30	+ sed_cmd_t sed_cmd_head, *sed_cmd_tail;
31
32	/* Linked list of append lines */
33	llist_t *append_head;
34	@@ -148,7 +156,7 @@ struct BUG_G_too_big {
35	#if ENABLE_FEATURE_CLEAN_UP
36	static void sed_free_and_close_stuff(void)
37	{
38	- sed_cmd_t *sed_cmd = G.sed_cmd_head.next;
39	+ sed_cmd_t *sed_cmd = G.sed_cmd_head;
40
41	llist_free(G.append_head, free);
42
43	@@ -599,6 +607,7 @@ static void add_cmd(const char *cmdstr)
44
45	/* first part (if present) is an address: either a '$', a number or a /regex/ */
46	cmdstr += get_address(cmdstr, &sed_cmd->beg_line, &sed_cmd->beg_match);
47	+ sed_cmd->beg_line_orig = sed_cmd->beg_line;
48
49	/* second part (if present) will begin with a comma */
50	if (*cmdstr == ',') {
51	@@ -630,8 +639,8 @@ static void add_cmd(const char *cmdstr)
52	cmdstr = parse_cmd_args(sed_cmd, cmdstr);
53
54	/* Add the command to the command array */
55	- G.sed_cmd_tail->next = sed_cmd;
56	- G.sed_cmd_tail = G.sed_cmd_tail->next;
57	+ *G.sed_cmd_tail = sed_cmd;
58	+ G.sed_cmd_tail = &sed_cmd->next;
59	}
60
61	/* If we glued multiple lines together, free the memory. */
62	@@ -777,7 +786,7 @@ static sed_cmd_t branch_to(char label)
63	{
64	sed_cmd_t *sed_cmd;
65
66	- for (sed_cmd = G.sed_cmd_head.next; sed_cmd; sed_cmd = sed_cmd->next) {
67	+ for (sed_cmd = G.sed_cmd_head; sed_cmd; sed_cmd = sed_cmd->next) {
68	if (sed_cmd->cmd == ':' && sed_cmd->string && !strcmp(sed_cmd->string, label)) {
69	return sed_cmd;
70	}
71	@@ -953,24 +962,24 @@ static void process_files(void)
72
73	/* For every line, go through all the commands */
74	restart:
75	- for (sed_cmd = G.sed_cmd_head.next; sed_cmd; sed_cmd = sed_cmd->next) {
76	+ for (sed_cmd = G.sed_cmd_head; sed_cmd; sed_cmd = sed_cmd->next) {
77	int old_matched, matched;
78
79	old_matched = sed_cmd->in_match;
80
81	/* Determine if this command matches this line: */
82
83	- //bb_error_msg("match1:%d", sed_cmd->in_match);
84	- //bb_error_msg("match2:%d", (!sed_cmd->beg_line && !sed_cmd->end_line
85	- // && !sed_cmd->beg_match && !sed_cmd->end_match));
86	- //bb_error_msg("match3:%d", (sed_cmd->beg_line > 0
87	- // && (sed_cmd->end_line \|\| sed_cmd->end_match
88	- // ? (sed_cmd->beg_line <= linenum)
89	- // : (sed_cmd->beg_line == linenum)
90	- // )
91	- // )
92	- //bb_error_msg("match4:%d", (beg_match(sed_cmd, pattern_space)));
93	- //bb_error_msg("match5:%d", (sed_cmd->beg_line == -1 && next_line == NULL));
94	+ dbg("match1:%d", sed_cmd->in_match);
95	+ dbg("match2:%d", (!sed_cmd->beg_line && !sed_cmd->end_line
96	+ && !sed_cmd->beg_match && !sed_cmd->end_match));
97	+ dbg("match3:%d", (sed_cmd->beg_line > 0
98	+ && (sed_cmd->end_line \|\| sed_cmd->end_match
99	+ ? (sed_cmd->beg_line <= linenum)
100	+ : (sed_cmd->beg_line == linenum)
101	+ )
102	+ ));
103	+ dbg("match4:%d", (beg_match(sed_cmd, pattern_space)));
104	+ dbg("match5:%d", (sed_cmd->beg_line == -1 && next_line == NULL));
105
106	/* Are we continuing a previous multi-line match? */
107	sed_cmd->in_match = sed_cmd->in_match
108	@@ -981,7 +990,14 @@ static void process_files(void)
109	\|\| (sed_cmd->beg_line > 0
110	&& (sed_cmd->end_line \|\| sed_cmd->end_match
111	/* note: even if end is numeric and is < linenum too,
112	- * GNU sed matches! We match too */
113	+ * GNU sed matches! We match too, therefore we don't
114	+ * check here that linenum <= end.
115	+ * Example:
116	+ * printf '1\n2\n3\n4\n' \| sed -n '1{N;N;d};1p;2,3p;3p;4p'
117	+ * first three input lines are deleted;
118	+ * 4th line is matched and printed
119	+ * by "2,3" (!) and by "4" ranges
120	+ */
121	? (sed_cmd->beg_line <= linenum) /* N,end */
122	: (sed_cmd->beg_line == linenum) /* N */
123	)
124	@@ -994,16 +1010,14 @@ static void process_files(void)
125	/* Snapshot the value */
126	matched = sed_cmd->in_match;
127
128	- //bb_error_msg("cmd:'%c' matched:%d beg_line:%d end_line:%d linenum:%d",
129	- //sed_cmd->cmd, matched, sed_cmd->beg_line, sed_cmd->end_line, linenum);
130	+ dbg("cmd:'%c' matched:%d beg_line:%d end_line:%d linenum:%d",
131	+ sed_cmd->cmd, matched, sed_cmd->beg_line, sed_cmd->end_line, linenum);
132
133	/* Is this line the end of the current match? */
134
135	if (matched) {
136	/* once matched, "n,xxx" range is dead, disabling it */
137	- if (sed_cmd->beg_line > 0
138	- && !(option_mask32 & OPT_in_place) /* but not for -i */
139	- ) {
140	+ if (sed_cmd->beg_line > 0) {
141	sed_cmd->beg_line = -2;
142	}
143	sed_cmd->in_match = !(
144	@@ -1017,7 +1031,8 @@ static void process_files(void)
145	/* or does this line matches our last address regex */
146	\|\| (sed_cmd->end_match && old_matched
147	&& (regexec(sed_cmd->end_match,
148	- pattern_space, 0, NULL, 0) == 0))
149	+ pattern_space, 0, NULL, 0) == 0)
150	+ )
151	);
152	}
153
154	@@ -1407,11 +1422,12 @@ int sed_main(int argc UNUSED_PARAM, char
155	add_input_file(stdin);
156	} else {
157	int i;
158	- FILE *file;
159
160	for (i = 0; argv[i]; i++) {
161	struct stat statbuf;
162	int nonstdoutfd;
163	+ FILE *file;
164	+ sed_cmd_t *sed_cmd;
165
166	if (LONE_DASH(argv[i]) && !(opt & OPT_in_place)) {
167	add_input_file(stdin);
168	@@ -1423,11 +1439,13 @@ int sed_main(int argc UNUSED_PARAM, char
169	status = EXIT_FAILURE;
170	continue;
171	}
172	+ add_input_file(file);
173	if (!(opt & OPT_in_place)) {
174	- add_input_file(file);
175	continue;
176	}
177
178	+ /* -i: process each FILE separately: */
179	+
180	G.outname = xasprintf("%sXXXXXX", argv[i]);
181	nonstdoutfd = xmkstemp(G.outname);
182	G.nonstdout = xfdopen_for_write(nonstdoutfd);
183	@@ -1438,15 +1456,20 @@ int sed_main(int argc UNUSED_PARAM, char
184	* but GNU sed 4.2.1 does not preserve them either */
185	fchmod(nonstdoutfd, statbuf.st_mode);
186	fchown(nonstdoutfd, statbuf.st_uid, statbuf.st_gid);
187	- add_input_file(file);
188	+
189	process_files();
190	fclose(G.nonstdout);
191	-
192	G.nonstdout = stdout;
193	+
194	/* unlink(argv[i]); */
195	xrename(G.outname, argv[i]);
196	free(G.outname);
197	G.outname = NULL;
198	+
199	+ /* Re-enable disabled range matches */
200	+ for (sed_cmd = G.sed_cmd_head; sed_cmd; sed_cmd = sed_cmd->next) {
201	+ sed_cmd->beg_line = sed_cmd->beg_line_orig;
202	+ }
203	}
204	/* Here, to handle "sed 'cmds' nonexistent_file" case we did:
205	* if (G.current_input_file >= G.input_file_count)
206	--- busybox-1.19.0/testsuite/sed.tests
207	+++ busybox-1.19.0-sed/testsuite/sed.tests
208	@@ -6,7 +6,7 @@
209
210	. ./testing.sh
211
212	-# testing "description" "arguments" "result" "infile" "stdin"
213	+# testing "description" "commands" "result" "infile" "stdin"
214
215	# Corner cases
216	testing "sed no files (stdin)" 'sed ""' "hello\n" "" "hello\n"
217	@@ -225,7 +225,7 @@ testing "sed s/xxx/[/" "sed -e 's/xxx/[/
218	#testing "sed -g (exhaustive)" "sed -e 's/[[:space:]]*/,/g'" ",1,2,3,4,5," \
219	# "" "12345"
220
221	-# testing "description" "arguments" "result" "infile" "stdin"
222	+# testing "description" "commands" "result" "infile" "stdin"
223
224	testing "sed n command must reset 'substituted' bit" \
225	"sed 's/1/x/;T;n;: next;s/3/y/;t quit;n;b next;: quit;q'" \
226	@@ -291,6 +291,10 @@ testing "sed understands \r" \
227	"sed 's/r/\r/'" \
228	"\rrr\n" "" "rrr\n"
229
230	-# testing "description" "arguments" "result" "infile" "stdin"
231	+testing "sed -i finishes ranges correctly" \
232	+ "sed '1,2d' -i input; echo \$?; cat input" \
233	+ "0\n3\n4\n" "1\n2\n3\n4\n" ""
234	+
235	+# testing "description" "commands" "result" "infile" "stdin"
236
237	exit $FAILCOUNT