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@ -1,4 +1,5 @@
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#include <limits.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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@ -38,6 +39,24 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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static int concatFileToStdoutWithOptions(char *file, bool showLineEnds) {
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FILE *fp;
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fp = fopen(file, "r");
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if (fp == NULL) {
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printf("failed to open '%s'. perhaps the path doesn't exist?\n", file);
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exit(1);
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}
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char *contents = malloc(2);
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while (fgets(contents, 2, fp) != NULL) {
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if (showLineEnds == true && contents[0] == '\n') {
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printf("$");
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}
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printf("%s", contents);
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}
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free(contents);
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return 0;
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}
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int main(int argc, char **argv) {
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if (argc == 1) {
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char ch;
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@ -46,6 +65,7 @@ int main(int argc, char **argv) {
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}
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return 0;
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} else {
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bool showLineEnds = false;
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for (int i = 1; i < argc; i++) {
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char *arg = argv[i];
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if (!strcmp(arg, "--help")) {
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@ -55,8 +75,11 @@ int main(int argc, char **argv) {
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"Usage:\n"
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" cat [options] [FILE]\n"
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"Available arguments:\n"
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" --help: show this help message\n"
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" --version: show the version of the program\n"
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" --help: show this help message\n"
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" --version: show the version of the "
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"program\n"
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" --show-ends, --show-line-ends, -E: print '$' at the end of "
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"lines.\n"
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"Notes:\n"
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" If no file is specified, FILE will be stdin.";
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printf("%s\n", help);
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@ -64,8 +87,11 @@ int main(int argc, char **argv) {
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} else if (!strcmp(arg, "--version")) {
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printf("%s\n", DRAKECU_VERSION);
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return 0;
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} else if (!strcmp(arg, "--show-ends") ||
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!strcmp(arg, "--show-line-ends") || !strcmp(arg, "-E")) {
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showLineEnds = true;
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} else {
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concatFileToStdout(arg);
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concatFileToStdoutWithOptions(arg, showLineEnds);
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}
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}
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return 0;
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