65 lines
1.1 KiB
C
65 lines
1.1 KiB
C
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#include <common.h>
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#include <command.h>
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#include <fs.h>
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#include <linux/ctype.h>
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#include <errno.h>
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#include <xfuncs.h>
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#include <malloc.h>
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static int do_cat(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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int ret;
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int fd, i;
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char *buf;
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int err = 0;
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int args = 1;
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if (argc < 2) {
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perror("cat");
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return 1;
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}
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buf = xmalloc(1024);
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while (args < argc) {
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fd = open(argv[args], 0);
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if (fd < 0) {
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printf("could not open %s: %s\n", argv[args], errno_str());
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goto out;
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}
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while((ret = read(fd, buf, 1024)) > 0) {
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for(i = 0; i < ret; i++) {
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if (isprint(buf[i]) || buf[i] == '\n' || buf[i] == '\t')
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putc(buf[i]);
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else
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putc('.');
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}
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if(ctrlc()) {
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err = 1;
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close(fd);
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goto out;
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}
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}
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close(fd);
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args++;
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}
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out:
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free(buf);
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return err;
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}
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static __maybe_unused char cmd_cat_help[] =
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"Usage: cat [FILES]\n"
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"Concatenate files on stdout. Currently only printable characters\n"
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"and \\n and \\t are printed, but this should be optional\n";
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U_BOOT_CMD_START(cat)
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.maxargs = CONFIG_MAXARGS,
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.cmd = do_cat,
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.usage = "concatenate file(s)",
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U_BOOT_CMD_HELP(cmd_cat_help)
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U_BOOT_CMD_END
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