time: -200 bytes of text

1 files changed, 96 insertions, 84 deletions

diff --git a/miscutils/time.c b/miscutils/time.c
index 7682a26..df10eeb 100644
--- a/miscutils/time.c
+++ b/miscutils/time.c
@@ -100,18 +100,14 @@ static int resuse_end(pid_t pid, resource_t * resp)
 	return 1;
 }
 
-/* Print ARGV to FP, with each entry in ARGV separated by FILLER.  */
-static void fprintargv(FILE * fp, char *const *argv, const char *filler)
+/* Print ARGV, with each entry in ARGV separated by FILLER.  */
+static void printargv(char *const *argv, const char *filler)
 {
-	char *const *av;
-
-	av = argv;
-	fputs(*av, fp);
-	while (*++av) {
-		fputs(filler, fp);
-		fputs(*av, fp);
+	fputs(*argv, stdout);
+	while (*++argv) {
+		fputs(filler, stdout);
+		fputs(*argv, stdout);
 	}
-	die_if_ferror(fp, "output");
 }
 
 /* Return the number of kilobytes corresponding to a number of pages PAGES.
@@ -124,28 +120,26 @@ static void fprintargv(FILE * fp, char *const *argv, const char *filler)
 
 static unsigned long ptok(unsigned long pages)
 {
-	static unsigned long ps = 0;
+	static unsigned long ps;
 	unsigned long tmp;
-	static long size = LONG_MAX;
 
 	/* Initialization.  */
 	if (ps == 0)
-		ps = (long) getpagesize();
+		ps = getpagesize();
 
 	/* Conversion.  */
 	if (pages > (LONG_MAX / ps)) {	/* Could overflow.  */
 		tmp = pages / 1024;	/* Smaller first, */
-		size = tmp * ps;	/* then larger.  */
-	} else {			/* Could underflow.  */
-		tmp = pages * ps;	/* Larger first, */
-		size = tmp / 1024;	/* then smaller.  */
+		return tmp * ps;	/* then larger.  */
 	}
-	return size;
+	/* Could underflow.  */
+	tmp = pages * ps;	/* Larger first, */
+	return tmp / 1024;	/* then smaller.  */
 }
 
 /* summarize: Report on the system use of a command.
 
-   Copy the FMT argument to FP except that `%' sequences
+   Print the FMT argument except that `%' sequences
    have special meaning, and `\n' and `\t' are translated into
    newline and tab, respectively, and `\\' is translated into `\'.
 
@@ -183,25 +177,23 @@ static unsigned long ptok(unsigned long pages)
    to kbytes by multiplying by the page size, dividing by 1024,
    and dividing by elapsed real time.
 
-   FP is the stream to print to.
    FMT is the format string, interpreted as described above.
    COMMAND is the command and args that are being summarized.
    RESP is resource information on the command.  */
 
-static void summarize(FILE * fp, const char *fmt, char **command,
-					  resource_t * resp)
+static void summarize(const char *fmt, char **command, resource_t * resp)
 {
 	unsigned long r;	/* Elapsed real milliseconds.  */
 	unsigned long v;	/* Elapsed virtual (CPU) milliseconds.  */
 
 	if (WIFSTOPPED(resp->waitstatus))
-		fprintf(fp, "Command stopped by signal %d\n",
+		printf("Command stopped by signal %d\n",
 				WSTOPSIG(resp->waitstatus));
 	else if (WIFSIGNALED(resp->waitstatus))
-		fprintf(fp, "Command terminated by signal %d\n",
+		printf("Command terminated by signal %d\n",
 				WTERMSIG(resp->waitstatus));
 	else if (WIFEXITED(resp->waitstatus) && WEXITSTATUS(resp->waitstatus))
-		fprintf(fp, "Command exited with non-zero status %d\n",
+		printf("Command exited with non-zero status %d\n",
 				WEXITSTATUS(resp->waitstatus));
 
 	/* Convert all times to milliseconds.  Occasionally, one of these values
@@ -214,178 +206,194 @@ static void summarize(FILE * fp, const char *fmt, char **command,
 	v = resp->ru.ru_utime.tv_sec * 1000 + resp->ru.ru_utime.TV_MSEC +
 		resp->ru.ru_stime.tv_sec * 1000 + resp->ru.ru_stime.TV_MSEC;
 
+	/* putchar() != putc(stdout) in glibc! */
+
 	while (*fmt) {
+		/* Handle leading literal part */
+		int n = strcspn(fmt, "%\\");
+		if (n) {
+			printf("%.*s", n, fmt);
+			fmt += n;
+			continue;
+		}
+
 		switch (*fmt) {
+#ifdef NOT_NEEDED
+		/* Handle literal char */
+		/* Usually we optimize for size, but there is a limit
+		 * for everything. With this we do a lot of 1-byte writes */
+		default:
+			putc(*fmt, stdout);
+			break;
+#endif
+
 		case '%':
 			switch (*++fmt) {
-			case '%':	/* Literal '%'.  */
-				putc('%', fp);
+#ifdef NOT_NEEDED_YET
+		/* Our format strings do not have these */
+		/* and we do not take format str from user */
+			default:
+				putc('%', stdout);
+				/*FALLTHROUGH*/
+			case '%':
+				if (!*fmt) goto ret;
+				putc(*fmt, stdout);
 				break;
+#endif
 			case 'C':	/* The command that got timed.  */
-				fprintargv(fp, command, " ");
+				printargv(command, " ");
 				break;
 			case 'D':	/* Average unshared data size.  */
-				fprintf(fp, "%lu",
+				printf("%lu",
 						MSEC_TO_TICKS(v) == 0 ? 0 :
 						ptok((UL) resp->ru.ru_idrss) / MSEC_TO_TICKS(v) +
 						ptok((UL) resp->ru.ru_isrss) / MSEC_TO_TICKS(v));
 				break;
 			case 'E':	/* Elapsed real (wall clock) time.  */
 				if (resp->elapsed.tv_sec >= 3600)	/* One hour -> h:m:s.  */
-					fprintf(fp, "%ldh %ldm %02lds",
+					printf("%ldh %ldm %02lds",
 							resp->elapsed.tv_sec / 3600,
 							(resp->elapsed.tv_sec % 3600) / 60,
 							resp->elapsed.tv_sec % 60);
 				else
-					fprintf(fp, "%ldm %ld.%02lds",	/* -> m:s.  */
+					printf("%ldm %ld.%02lds",	/* -> m:s.  */
 							resp->elapsed.tv_sec / 60,
 							resp->elapsed.tv_sec % 60,
 							resp->elapsed.tv_usec / 10000);
 				break;
 			case 'F':	/* Major page faults.  */
-				fprintf(fp, "%ld", resp->ru.ru_majflt);
+				printf("%ld", resp->ru.ru_majflt);
 				break;
 			case 'I':	/* Inputs.  */
-				fprintf(fp, "%ld", resp->ru.ru_inblock);
+				printf("%ld", resp->ru.ru_inblock);
 				break;
 			case 'K':	/* Average mem usage == data+stack+text.  */
-				fprintf(fp, "%lu",
+				printf("%lu",
 						MSEC_TO_TICKS(v) == 0 ? 0 :
 						ptok((UL) resp->ru.ru_idrss) / MSEC_TO_TICKS(v) +
 						ptok((UL) resp->ru.ru_isrss) / MSEC_TO_TICKS(v) +
 						ptok((UL) resp->ru.ru_ixrss) / MSEC_TO_TICKS(v));
 				break;
 			case 'M':	/* Maximum resident set size.  */
-				fprintf(fp, "%lu", ptok((UL) resp->ru.ru_maxrss));
+				printf("%lu", ptok((UL) resp->ru.ru_maxrss));
 				break;
 			case 'O':	/* Outputs.  */
-				fprintf(fp, "%ld", resp->ru.ru_oublock);
+				printf("%ld", resp->ru.ru_oublock);
 				break;
 			case 'P':	/* Percent of CPU this job got.  */
 				/* % cpu is (total cpu time)/(elapsed time).  */
 				if (r > 0)
-					fprintf(fp, "%lu%%", (v * 100 / r));
+					printf("%lu%%", (v * 100 / r));
 				else
-					fprintf(fp, "?%%");
+					printf("?%%");
 				break;
 			case 'R':	/* Minor page faults (reclaims).  */
-				fprintf(fp, "%ld", resp->ru.ru_minflt);
+				printf("%ld", resp->ru.ru_minflt);
 				break;
 			case 'S':	/* System time.  */
-				fprintf(fp, "%ld.%02ld",
+				printf("%ld.%02ld",
 						resp->ru.ru_stime.tv_sec,
 						resp->ru.ru_stime.TV_MSEC / 10);
 				break;
 			case 'T':	/* System time.  */
 				if (resp->ru.ru_stime.tv_sec >= 3600) /* One hour -> h:m:s.  */
-					fprintf(fp, "%ldh %ldm %02lds",
+					printf("%ldh %ldm %02lds",
 							resp->ru.ru_stime.tv_sec / 3600,
 							(resp->ru.ru_stime.tv_sec % 3600) / 60,
 							resp->ru.ru_stime.tv_sec % 60);
 				else
-					fprintf(fp, "%ldm %ld.%02lds",	/* -> m:s.  */
+					printf("%ldm %ld.%02lds",	/* -> m:s.  */
 							resp->ru.ru_stime.tv_sec / 60,
 							resp->ru.ru_stime.tv_sec % 60,
 							resp->ru.ru_stime.tv_usec / 10000);
 				break;
 			case 'U':	/* User time.  */
-				fprintf(fp, "%ld.%02ld",
+				printf("%ld.%02ld",
 						resp->ru.ru_utime.tv_sec,
 						resp->ru.ru_utime.TV_MSEC / 10);
 				break;
 			case 'u':	/* User time.  */
 				if (resp->ru.ru_utime.tv_sec >= 3600) /* One hour -> h:m:s.  */
-					fprintf(fp, "%ldh %ldm %02lds",
+					printf("%ldh %ldm %02lds",
 							resp->ru.ru_utime.tv_sec / 3600,
 							(resp->ru.ru_utime.tv_sec % 3600) / 60,
 							resp->ru.ru_utime.tv_sec % 60);
 				else
-					fprintf(fp, "%ldm %ld.%02lds",	/* -> m:s.  */
+					printf("%ldm %ld.%02lds",	/* -> m:s.  */
 							resp->ru.ru_utime.tv_sec / 60,
 							resp->ru.ru_utime.tv_sec % 60,
 							resp->ru.ru_utime.tv_usec / 10000);
 				break;
 			case 'W':	/* Times swapped out.  */
-				fprintf(fp, "%ld", resp->ru.ru_nswap);
+				printf("%ld", resp->ru.ru_nswap);
 				break;
 			case 'X':	/* Average shared text size.  */
-				fprintf(fp, "%lu",
+				printf("%lu",
 						MSEC_TO_TICKS(v) == 0 ? 0 :
 						ptok((UL) resp->ru.ru_ixrss) / MSEC_TO_TICKS(v));
 				break;
 			case 'Z':	/* Page size.  */
-				fprintf(fp, "%d", getpagesize());
+				printf("%d", getpagesize());
 				break;
 			case 'c':	/* Involuntary context switches.  */
-				fprintf(fp, "%ld", resp->ru.ru_nivcsw);
+				printf("%ld", resp->ru.ru_nivcsw);
 				break;
 			case 'e':	/* Elapsed real time in seconds.  */
-				fprintf(fp, "%ld.%02ld",
+				printf("%ld.%02ld",
 						resp->elapsed.tv_sec, resp->elapsed.tv_usec / 10000);
 				break;
 			case 'k':	/* Signals delivered.  */
-				fprintf(fp, "%ld", resp->ru.ru_nsignals);
+				printf("%ld", resp->ru.ru_nsignals);
 				break;
 			case 'p':	/* Average stack segment.  */
-				fprintf(fp, "%lu",
+				printf("%lu",
 						MSEC_TO_TICKS(v) == 0 ? 0 :
 						ptok((UL) resp->ru.ru_isrss) / MSEC_TO_TICKS(v));
 				break;
 			case 'r':	/* Incoming socket messages received.  */
-				fprintf(fp, "%ld", resp->ru.ru_msgrcv);
+				printf("%ld", resp->ru.ru_msgrcv);
 				break;
 			case 's':	/* Outgoing socket messages sent.  */
-				fprintf(fp, "%ld", resp->ru.ru_msgsnd);
+				printf("%ld", resp->ru.ru_msgsnd);
 				break;
 			case 't':	/* Average resident set size.  */
-				fprintf(fp, "%lu",
+				printf("%lu",
 						MSEC_TO_TICKS(v) == 0 ? 0 :
 						ptok((UL) resp->ru.ru_idrss) / MSEC_TO_TICKS(v));
 				break;
 			case 'w':	/* Voluntary context switches.  */
-				fprintf(fp, "%ld", resp->ru.ru_nvcsw);
+				printf("%ld", resp->ru.ru_nvcsw);
 				break;
 			case 'x':	/* Exit status.  */
-				fprintf(fp, "%d", WEXITSTATUS(resp->waitstatus));
+				printf("%d", WEXITSTATUS(resp->waitstatus));
 				break;
-			case '\0':
-				putc('?', fp);
-				return;
-			default:
-				putc('?', fp);
-				putc(*fmt, fp);
 			}
-			++fmt;
 			break;
 
+#ifdef NOT_NEEDED_YET
 		case '\\':		/* Format escape.  */
 			switch (*++fmt) {
+			default:
+				putc('\\', stdout);
+				/*FALLTHROUGH*/
+			case '\\':
+				if (!*fmt) goto ret;
+				putc(*fmt, stdout);
+				break;
 			case 't':
-				putc('\t', fp);
+				putc('\t', stdout);
 				break;
 			case 'n':
-				putc('\n', fp);
-				break;
-			case '\\':
-				putc('\\', fp);
+				putc('\n', stdout);
 				break;
-			default:
-				putc('?', fp);
-				putc('\\', fp);
-				putc(*fmt, fp);
 			}
-			++fmt;
 			break;
-
-		default:
-			putc(*fmt++, fp);
+#endif
 		}
-
-		die_if_ferror(fp, "output");
+		++fmt;
 	}
-	putc('\n', fp);
-
-	die_if_ferror(fp, "output");
+ /* ret: */
+	putc('\n', stdout);
 }
 
 /* Run command CMD and return statistics on it.
@@ -449,7 +457,11 @@ int time_main(int argc, char **argv)
 	}
 
 	run_command(argv, &res);
-	summarize(stderr, output_format, argv, &res);
+
+	/* Cheat. printf's are shorter :) */
+	stdout = stderr;
+	dup2(2, 1); /* just in case libc does something silly :( */
+	summarize(output_format, argv, &res);
 
 	if (WIFSTOPPED(res.waitstatus))
 		return WSTOPSIG(res.waitstatus);
@@ -457,5 +469,5 @@ int time_main(int argc, char **argv)
 		return WTERMSIG(res.waitstatus);
 	if (WIFEXITED(res.waitstatus))
 		return WEXITSTATUS(res.waitstatus);
-	return 0;
+	fflush_stdout_and_exit(0);
 }