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Bernhard Fischer trimmed down dos2unix a bit.
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parent
078bacf1e9
commit
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@ -35,28 +35,24 @@
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#include <sys/time.h>
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#include <sys/time.h>
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#include "busybox.h"
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#include "busybox.h"
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#define CT_AUTO 0
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#define CT_UNIX2DOS 1
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#define CT_UNIX2DOS 1
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#define CT_DOS2UNIX 2
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#define CT_DOS2UNIX 2
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/* We are making a lame pseudo-random string generator here. in
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/* We are making a lame pseudo-random string generator here. in
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* convert(), each pass through the while loop will add more and more
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* convert(), each pass through the while loop will add more and more
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* stuff into value, which is _supposed_ to wrap. We don't care about
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* stuff into value, which is _supposed_ to wrap. We don't care about
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* it being accurate. We care about it being messy, since we then mod
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* it being accurate. We care about it being messy, since we use it
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* it by the sizeof(letters) and then use that as an index into letters
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* to pick a random letter to add to out temporary file. */
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* to pick a random letter to add to out temporary file. */
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typedef unsigned long int bb_uint64_t;
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typedef unsigned long int bb_uint64_t;
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static const char letters[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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/* if fn is NULL then input is stdin and output is stdout */
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// if fn is NULL then input is stdin and output is stdout
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static int convert(char *fn, int ConvType)
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static int convert(char *fn, int ConvType)
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{
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{
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int c, fd;
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int c, fd;
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struct timeval tv;
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struct timeval tv;
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char tempFn[BUFSIZ];
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RESERVE_CONFIG_BUFFER(tempFn, BUFSIZ);
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static bb_uint64_t value=0;
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static bb_uint64_t value=0;
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FILE *in = stdin, *out = stdout;
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FILE *in, *out;
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if (fn != NULL) {
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if (fn != NULL) {
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in = bb_xfopen(fn, "rw");
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in = bb_xfopen(fn, "rw");
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@ -73,7 +69,9 @@ static int convert(char *fn, int ConvType)
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* the input file... */
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* the input file... */
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gettimeofday (&tv, NULL);
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gettimeofday (&tv, NULL);
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value += ((bb_uint64_t) tv.tv_usec << 16) ^ tv.tv_sec ^ getpid ();
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value += ((bb_uint64_t) tv.tv_usec << 16) ^ tv.tv_sec ^ getpid ();
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tempFn[++c] = letters[value % 62];
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tempFn[++c] = ((value%62) < 26)?(value%62)+97:
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((value%62) < 52)?(value%62)+39:
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(value%62)-4;
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tempFn[c+1] = '\0';
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tempFn[c+1] = '\0';
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value /= 62;
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value /= 62;
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@ -88,12 +86,16 @@ static int convert(char *fn, int ConvType)
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}
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}
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break;
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break;
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}
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}
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} else {
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in = stdin;
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out = stdout;
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}
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}
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while ((c = fgetc(in)) != EOF) {
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while ((c = fgetc(in)) != EOF) {
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if (c == '\r') {
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if (c == '\r') {
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if ((ConvType == CT_UNIX2DOS) && (fn != NULL)) {
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if ((ConvType == CT_UNIX2DOS) && (fn != NULL)) {
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// file is alredy in DOS format so it is not necessery to touch it
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/* file is already in DOS format so it is
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* not necessary to touch it. */
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remove(tempFn);
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remove(tempFn);
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if (fclose(in) < 0 || fclose(out) < 0) {
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if (fclose(in) < 0 || fclose(out) < 0) {
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bb_perror_nomsg();
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bb_perror_nomsg();
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@ -101,13 +103,12 @@ static int convert(char *fn, int ConvType)
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}
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}
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return 0;
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return 0;
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}
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}
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if (!ConvType)
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ConvType = CT_DOS2UNIX;
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break;
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break;
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}
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}
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if (c == '\n') {
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if (c == '\n') {
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if ((ConvType == CT_DOS2UNIX) && (fn != NULL)) {
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if ((ConvType == CT_DOS2UNIX) && (fn != NULL)) {
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// file is alredy in UNIX format so it is not necessery to touch it
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/* file is already in DOS format so it is
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* not necessary to touch it. */
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remove(tempFn);
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remove(tempFn);
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if ((fclose(in) < 0) || (fclose(out) < 0)) {
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if ((fclose(in) < 0) || (fclose(out) < 0)) {
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bb_perror_nomsg();
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bb_perror_nomsg();
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@ -115,19 +116,13 @@ static int convert(char *fn, int ConvType)
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}
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}
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return 0;
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return 0;
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}
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}
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if (!ConvType) {
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ConvType = CT_UNIX2DOS;
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}
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if (ConvType == CT_UNIX2DOS) {
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if (ConvType == CT_UNIX2DOS) {
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fputc('\r', out);
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fputc('\r', out);
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}
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}
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fputc('\n', out);
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break;
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}
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}
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fputc(c, out);
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fputc(c, out);
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}
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}
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if (c != EOF)
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while (c != EOF && (c = fgetc(in)) != EOF) {
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while ((c = fgetc(in)) != EOF) {
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if (c == '\r')
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if (c == '\r')
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continue;
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continue;
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if (c == '\n') {
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if (c == '\n') {
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@ -160,30 +155,23 @@ static int convert(char *fn, int ConvType)
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int dos2unix_main(int argc, char *argv[])
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int dos2unix_main(int argc, char *argv[])
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{
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{
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int ConvType = CT_AUTO;
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int ConvType;
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int o;
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int o;
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//See if we are supposed to be doing dos2unix or unix2dos
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/* See if we are supposed to be doing dos2unix or unix2dos */
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if (argv[0][0]=='d') {
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if (argv[0][0]=='d') {
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ConvType = CT_DOS2UNIX;
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ConvType = CT_DOS2UNIX;
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}
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} else {
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if (argv[0][0]=='u') {
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ConvType = CT_UNIX2DOS;
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ConvType = CT_UNIX2DOS;
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}
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}
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// process parameters
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/* process parameters */
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while ((o = getopt(argc, argv, "du")) != EOF) {
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o = bb_getopt_ulflags(argc, argv, "ud");
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switch (o) {
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case 'd':
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/* Do the conversion requested by an argument else do the default
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ConvType = CT_UNIX2DOS;
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* conversion depending on our name. */
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break;
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if (o)
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case 'u':
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ConvType = o;
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ConvType = CT_DOS2UNIX;
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break;
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default:
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bb_show_usage();
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}
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}
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if (optind < argc) {
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if (optind < argc) {
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while(optind < argc)
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while(optind < argc)
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