Attachment 147810 Details for Bug 186861 – patch to fix xzgrep

[patch] patch to fix xzgrep

patch-xzgrep (text/plain), 2.37 KB, created by Stefan Ehmann on 2014-09-29 20:56:34 UTC

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Creator: Stefan Ehmann

Created: 2014-09-29 20:56:34 UTC

Size: 2.37 KB

patch

obsolete

>Index: usr.bin/grep/file.c
>===================================================================
>--- usr.bin/grep/file.c	(revision 271683)
>+++ usr.bin/grep/file.c	(working copy)
>@@ -65,6 +65,8 @@
> static gzFile gzbufdesc;
> #ifndef WITHOUT_LZMA
> static lzma_stream lstrm = LZMA_STREAM_INIT;
>+static lzma_action laction = LZMA_RUN;
>+static uint8_t lin_buf[MAXBUFSIZ];
> #endif
> #ifndef WITHOUT_BZIP2
> static BZFILE* bzbufdesc;
>@@ -123,34 +125,34 @@
> #endif
> #ifndef WITHOUT_LZMA
> 	} else if ((filebehave == FILE_XZ) || (filebehave == FILE_LZMA)) {
>-		lzma_action action = LZMA_RUN;
>-		uint8_t in_buf[MAXBUFSIZ];
> 		lzma_ret ret;
>+		lstrm.next_out = buffer;
> 
>-		ret = (filebehave == FILE_XZ) ?
>-		    lzma_stream_decoder(&lstrm, UINT64_MAX,
>-		    LZMA_CONCATENATED) :
>-		    lzma_alone_decoder(&lstrm, UINT64_MAX);
>+		do {
>+			if (lstrm.avail_in == 0) {
>+				lstrm.next_in = lin_buf;
>+				nr = read(f->fd, lin_buf, MAXBUFSIZ);
> 
>-		if (ret != LZMA_OK)
>-			return (-1);
>+				if (nr < 0)
>+					return (-1);
>+				else if (nr == 0)
>+					laction = LZMA_FINISH;
> 
>-		lstrm.next_out = buffer;
>-		lstrm.avail_out = MAXBUFSIZ;
>-		lstrm.next_in = in_buf;
>-		nr = read(f->fd, in_buf, MAXBUFSIZ);
>+				lstrm.avail_in = nr;
>+			}
> 
>-		if (nr < 0)
>-			return (-1);
>-		else if (nr == 0)
>-			action = LZMA_FINISH;
>+			ret = lzma_code(&lstrm, laction);
> 
>-		lstrm.avail_in = nr;
>-		ret = lzma_code(&lstrm, action);
>+			if (ret != LZMA_OK && ret != LZMA_STREAM_END)
>+				return (-1);
> 
>-		if (ret != LZMA_OK && ret != LZMA_STREAM_END)
>-			return (-1);
>-		bufrem = MAXBUFSIZ - lstrm.avail_out;
>+			if (lstrm.avail_out == 0 || ret == LZMA_STREAM_END) {
>+				bufrem = MAXBUFSIZ - lstrm.avail_out;
>+				lstrm.next_out = buffer;
>+				lstrm.avail_out = MAXBUFSIZ;
>+			}
>+		} while (bufrem == 0 && ret != LZMA_STREAM_END);
>+
> 		return (0);
> #endif	/* WIHTOUT_LZMA */
> 	} else
>@@ -291,7 +293,22 @@
> 	    (bzbufdesc = BZ2_bzdopen(f->fd, "r")) == NULL)
> 		goto error2;
> #endif
>+#ifndef WITHOUT_LZMA
>+	else if ((filebehave == FILE_XZ) || (filebehave == FILE_LZMA)) {
>+		lzma_ret ret;
>+		ret = (filebehave == FILE_XZ) ?
>+			lzma_stream_decoder(&lstrm, UINT64_MAX,
>+					LZMA_CONCATENATED) :
>+			lzma_alone_decoder(&lstrm, UINT64_MAX);
> 
>+		if (ret != LZMA_OK)
>+			goto error2;
>+
>+		lstrm.avail_in = 0;
>+		lstrm.avail_out = MAXBUFSIZ;
>+	}
>+#endif
>+
> 	/* Fill read buffer, also catches errors early */
> 	if (bufrem == 0 && grep_refill(f) != 0)
> 		goto error2;

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