summaryrefslogtreecommitdiffstats
path: root/usr.bin/patch/inp.c
diff options
context:
space:
mode:
Diffstat (limited to 'usr.bin/patch/inp.c')
-rw-r--r--usr.bin/patch/inp.c313
1 files changed, 0 insertions, 313 deletions
diff --git a/usr.bin/patch/inp.c b/usr.bin/patch/inp.c
deleted file mode 100644
index a3eeb90..0000000
--- a/usr.bin/patch/inp.c
+++ /dev/null
@@ -1,313 +0,0 @@
-/* $Header: inp.c,v 2.0 86/09/17 15:37:02 lwall Exp $
- *
- * $Log: inp.c,v $
- * Revision 2.0 86/09/17 15:37:02 lwall
- * Baseline for netwide release.
- *
- */
-
-#include "EXTERN.h"
-#include "common.h"
-#include "util.h"
-#include "pch.h"
-#include "INTERN.h"
-#include "inp.h"
-
-/* Input-file-with-indexable-lines abstract type */
-
-static long i_size; /* size of the input file */
-static char *i_womp; /* plan a buffer for entire file */
-static char **i_ptr; /* pointers to lines in i_womp */
-
-static int tifd = -1; /* plan b virtual string array */
-static char *tibuf[2]; /* plan b buffers */
-static LINENUM tiline[2] = {-1, -1}; /* 1st line in each buffer */
-static LINENUM lines_per_buf; /* how many lines per buffer */
-static int tireclen; /* length of records in tmp file */
-
-/* New patch--prepare to edit another file. */
-
-void
-re_input()
-{
- if (using_plan_a) {
- i_size = 0;
-#ifndef lint
- if (i_ptr != Null(char**))
- free((char *)i_ptr);
-#endif
- if (i_womp != Nullch)
- free(i_womp);
- i_womp = Nullch;
- i_ptr = Null(char **);
- }
- else {
- using_plan_a = TRUE; /* maybe the next one is smaller */
- Close(tifd);
- tifd = -1;
- free(tibuf[0]);
- free(tibuf[1]);
- tibuf[0] = tibuf[1] = Nullch;
- tiline[0] = tiline[1] = -1;
- tireclen = 0;
- }
-}
-
-/* Constuct the line index, somehow or other. */
-
-void
-scan_input(filename)
-char *filename;
-{
- if (!plan_a(filename))
- plan_b(filename);
- if (verbose) {
- say3("Patching file %s using Plan %s...\n", filename,
- (using_plan_a ? "A" : "B") );
- }
-}
-
-/* Try keeping everything in memory. */
-
-bool
-plan_a(filename)
-char *filename;
-{
- int ifd;
- Reg1 char *s;
- Reg2 LINENUM iline;
-
- if (ok_to_create_file && stat(filename, &filestat) < 0) {
- if (verbose)
- say2("(Creating file %s...)\n",filename);
- makedirs(filename, TRUE);
- close(creat(filename, 0666));
- }
- if (stat(filename, &filestat) < 0) {
- Sprintf(buf, "RCS/%s%s", filename, RCSSUFFIX);
- if (stat(buf, &filestat) >= 0 || stat(buf+4, &filestat) >= 0) {
- Sprintf(buf, CHECKOUT, filename);
- if (verbose)
- say2("Can't find %s--attempting to check it out from RCS.\n",
- filename);
- if (system(buf) || stat(filename, &filestat))
- fatal2("Can't check out %s.\n", filename);
- }
- else {
- Sprintf(buf, "SCCS/%s%s", SCCSPREFIX, filename);
- if (stat(buf, &filestat) >= 0 || stat(buf+5, &filestat) >= 0) {
- Sprintf(buf, GET, filename);
- if (verbose)
- say2("Can't find %s--attempting to get it from SCCS.\n",
- filename);
- if (system(buf) || stat(filename, &filestat))
- fatal2("Can't get %s.\n", filename);
- }
- else
- fatal2("Can't find %s.\n", filename);
- }
- }
- filemode = filestat.st_mode;
- if ((filemode & S_IFMT) & ~S_IFREG)
- fatal2("%s is not a normal file--can't patch.\n", filename);
- i_size = filestat.st_size;
- if (out_of_mem) {
- set_hunkmax(); /* make sure dynamic arrays are allocated */
- out_of_mem = FALSE;
- return FALSE; /* force plan b because plan a bombed */
- }
-#ifdef lint
- i_womp = Nullch;
-#else
- i_womp = malloc((MEM)(i_size+2)); /* lint says this may alloc less than */
- /* i_size, but that's okay, I think. */
-#endif
- if (i_womp == Nullch)
- return FALSE;
- if ((ifd = open(filename, 0)) < 0)
- fatal2("Can't open file %s\n", filename);
-#ifndef lint
- if (read(ifd, i_womp, (int)i_size) != i_size) {
- Close(ifd); /* probably means i_size > 15 or 16 bits worth */
- free(i_womp); /* at this point it doesn't matter if i_womp was */
- return FALSE; /* undersized. */
- }
-#endif
- Close(ifd);
- if (i_size && i_womp[i_size-1] != '\n')
- i_womp[i_size++] = '\n';
- i_womp[i_size] = '\0';
-
- /* count the lines in the buffer so we know how many pointers we need */
-
- iline = 0;
- for (s=i_womp; *s; s++) {
- if (*s == '\n')
- iline++;
- }
-#ifdef lint
- i_ptr = Null(char**);
-#else
- i_ptr = (char **)malloc((MEM)((iline + 2) * sizeof(char *)));
-#endif
- if (i_ptr == Null(char **)) { /* shucks, it was a near thing */
- free((char *)i_womp);
- return FALSE;
- }
-
- /* now scan the buffer and build pointer array */
-
- iline = 1;
- i_ptr[iline] = i_womp;
- for (s=i_womp; *s; s++) {
- if (*s == '\n')
- i_ptr[++iline] = s+1; /* these are NOT null terminated */
- }
- input_lines = iline - 1;
-
- /* now check for revision, if any */
-
- if (revision != Nullch) {
- if (!rev_in_string(i_womp)) {
- if (force) {
- if (verbose)
- say2("\
-Warning: this file doesn't appear to be the %s version--patching anyway.\n",
- revision);
- }
- else {
- ask2("\
-This file doesn't appear to be the %s version--patch anyway? [n] ",
- revision);
- if (*buf != 'y')
- fatal1("Aborted.\n");
- }
- }
- else if (verbose)
- say2("Good. This file appears to be the %s version.\n",
- revision);
- }
- return TRUE; /* plan a will work */
-}
-
-/* Keep (virtually) nothing in memory. */
-
-void
-plan_b(filename)
-char *filename;
-{
- Reg3 FILE *ifp;
- Reg1 int i = 0;
- Reg2 int maxlen = 1;
- Reg4 bool found_revision = (revision == Nullch);
-
- using_plan_a = FALSE;
- if ((ifp = fopen(filename, "r")) == Nullfp)
- fatal2("Can't open file %s\n", filename);
- if ((tifd = creat(TMPINNAME, 0666)) < 0)
- fatal2("Can't open file %s\n", TMPINNAME);
- while (fgets(buf, sizeof buf, ifp) != Nullch) {
- if (revision != Nullch && !found_revision && rev_in_string(buf))
- found_revision = TRUE;
- if ((i = strlen(buf)) > maxlen)
- maxlen = i; /* find longest line */
- }
- if (revision != Nullch) {
- if (!found_revision) {
- if (force) {
- if (verbose)
- say2("\
-Warning: this file doesn't appear to be the %s version--patching anyway.\n",
- revision);
- }
- else {
- ask2("\
-This file doesn't appear to be the %s version--patch anyway? [n] ",
- revision);
- if (*buf != 'y')
- fatal1("Aborted.\n");
- }
- }
- else if (verbose)
- say2("Good. This file appears to be the %s version.\n",
- revision);
- }
- Fseek(ifp, 0L, 0); /* rewind file */
- lines_per_buf = BUFFERSIZE / maxlen;
- tireclen = maxlen;
- tibuf[0] = malloc((MEM)(BUFFERSIZE + 1));
- tibuf[1] = malloc((MEM)(BUFFERSIZE + 1));
- if (tibuf[1] == Nullch)
- fatal1("Can't seem to get enough memory.\n");
- for (i=1; ; i++) {
- if (! (i % lines_per_buf)) /* new block */
- if (write(tifd, tibuf[0], BUFFERSIZE) < BUFFERSIZE)
- fatal1("patch: can't write temp file.\n");
- if (fgets(tibuf[0] + maxlen * (i%lines_per_buf), maxlen + 1, ifp)
- == Nullch) {
- input_lines = i - 1;
- if (i % lines_per_buf)
- if (write(tifd, tibuf[0], BUFFERSIZE) < BUFFERSIZE)
- fatal1("patch: can't write temp file.\n");
- break;
- }
- }
- Fclose(ifp);
- Close(tifd);
- if ((tifd = open(TMPINNAME, 0)) < 0) {
- fatal2("Can't reopen file %s\n", TMPINNAME);
- }
-}
-
-/* Fetch a line from the input file, \n terminated, not necessarily \0. */
-
-char *
-ifetch(line,whichbuf)
-Reg1 LINENUM line;
-int whichbuf; /* ignored when file in memory */
-{
- if (line < 1 || line > input_lines)
- return "";
- if (using_plan_a)
- return i_ptr[line];
- else {
- LINENUM offline = line % lines_per_buf;
- LINENUM baseline = line - offline;
-
- if (tiline[0] == baseline)
- whichbuf = 0;
- else if (tiline[1] == baseline)
- whichbuf = 1;
- else {
- tiline[whichbuf] = baseline;
-#ifndef lint /* complains of long accuracy */
- Lseek(tifd, (off_t)baseline / lines_per_buf * BUFFERSIZE, 0);
-#endif
- if (read(tifd, tibuf[whichbuf], BUFFERSIZE) < 0)
- fatal2("Error reading tmp file %s.\n", TMPINNAME);
- }
- return tibuf[whichbuf] + (tireclen*offline);
- }
-}
-
-/* True if the string argument contains the revision number we want. */
-
-bool
-rev_in_string(string)
-char *string;
-{
- Reg1 char *s;
- Reg2 int patlen;
-
- if (revision == Nullch)
- return TRUE;
- patlen = strlen(revision);
- for (s = string; *s; s++) {
- if (isspace(*s) && strnEQ(s+1, revision, patlen) &&
- isspace(s[patlen+1] )) {
- return TRUE;
- }
- }
- return FALSE;
-}
-
OpenPOWER on IntegriCloud