From e8240f19bd99802e0ccb1738b2d2e630b6eb9087 Mon Sep 17 00:00:00 2001 From: Denis Vlasenko Date: Tue, 26 Jun 2007 15:59:37 +0000 Subject: uuencode: shrink function old new delta uuencode_main 427 337 -90 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-90) Total: -90 bytes text data bss dec hex filename 734981 3028 14400 752409 b7b19 busybox_old 734889 3028 14400 752317 b7abd busybox_unstripped --- coreutils/uuencode.c | 62 +++++++++++++++++++++------------------------------- 1 file changed, 25 insertions(+), 37 deletions(-) (limited to 'coreutils') diff --git a/coreutils/uuencode.c b/coreutils/uuencode.c index b54e317a2..c1458f7fb 100644 --- a/coreutils/uuencode.c +++ b/coreutils/uuencode.c @@ -10,64 +10,52 @@ #include "libbb.h" +enum { + SRC_BUF_SIZE = 45, /* This *MUST* be a multiple of 3 */ + DST_BUF_SIZE = 4 * ((SRC_BUF_SIZE + 2) / 3), +}; -#define SRC_BUF_SIZE 45 // This *MUST* be a multiple of 3 -#define DST_BUF_SIZE 4 * ((SRC_BUF_SIZE + 2) / 3) int uuencode_main(int argc, char **argv); int uuencode_main(int argc, char **argv) { - const size_t src_buf_size = SRC_BUF_SIZE; - const size_t dst_buf_size = DST_BUF_SIZE; - size_t write_size = dst_buf_size; struct stat stat_buf; - FILE *src_stream = stdin; + int src_fd = STDIN_FILENO; const char *tbl; - size_t size; mode_t mode; - RESERVE_CONFIG_BUFFER(src_buf, SRC_BUF_SIZE + 1); - RESERVE_CONFIG_BUFFER(dst_buf, DST_BUF_SIZE + 1); + char src_buf[SRC_BUF_SIZE]; + char dst_buf[DST_BUF_SIZE + 1]; tbl = bb_uuenc_tbl_std; + mode = 0666 & ~umask(0666); + opt_complementary = "-1:?2"; /* must have 1 or 2 args */ if (getopt32(argc, argv, "m")) { tbl = bb_uuenc_tbl_base64; } - - switch (argc - optind) { - case 2: - src_stream = xfopen(argv[optind], "r"); - xstat(argv[optind], &stat_buf); - mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); - break; - case 1: - mode = 0666 & ~umask(0666); - break; - default: - bb_show_usage(); + argv += optind; + if (argc == optind + 2) { + src_fd = xopen(*argv, O_RDONLY); + fstat(src_fd, &stat_buf); + mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); + argv++; } - printf("begin%s %o %s", tbl == bb_uuenc_tbl_std ? "" : "-base64", mode, argv[argc - 1]); - - while ((size = fread(src_buf, 1, src_buf_size, src_stream)) > 0) { - if (size != src_buf_size) { - /* write_size is always 60 until the last line */ - write_size = (4 * ((size + 2) / 3)); - /* pad with 0s so we can just encode extra bits */ - memset(&src_buf[size], 0, src_buf_size - size); - } + printf("begin%s %o %s", tbl == bb_uuenc_tbl_std ? "" : "-base64", mode, *argv); + while (1) { + size_t size = full_read(src_fd, src_buf, SRC_BUF_SIZE); + if (!size) + break; + if ((ssize_t)size < 0) + bb_perror_msg_and_die(bb_msg_read_error); /* Encode the buffer we just read in */ - bb_uuencode((unsigned char*)src_buf, dst_buf, size, tbl); - + bb_uuencode(dst_buf, src_buf, size, tbl); putchar('\n'); if (tbl == bb_uuenc_tbl_std) { putchar(tbl[size]); } - if (fwrite(dst_buf, 1, write_size, stdout) != write_size) { - bb_perror_msg_and_die(bb_msg_write_error); - } + fflush(stdout); + xwrite(STDOUT_FILENO, dst_buf, 4 * ((size + 2) / 3)); } printf(tbl == bb_uuenc_tbl_std ? "\n`\nend\n" : "\n====\n"); - die_if_ferror(src_stream, "source"); /* TODO - Fix this! */ - fflush_stdout_and_exit(EXIT_SUCCESS); } -- cgit v1.2.3