diff options
Diffstat (limited to 'gnu/usr.bin/patch/inp.c')
-rw-r--r-- | gnu/usr.bin/patch/inp.c | 397 |
1 files changed, 0 insertions, 397 deletions
diff --git a/gnu/usr.bin/patch/inp.c b/gnu/usr.bin/patch/inp.c deleted file mode 100644 index 17f8adb..0000000 --- a/gnu/usr.bin/patch/inp.c +++ /dev/null @@ -1,397 +0,0 @@ -/* $FreeBSD$ - * - * $Log: inp.c,v $ - * Revision 2.0.1.1 88/06/03 15:06:13 lwall - * patch10: made a little smarter about sccs files - * - * 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(void) -{ - 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(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(char *filename) -{ - int ifd, statfailed; - Reg1 char *s; - Reg2 LINENUM iline; - char lbuf[INITLINELEN]; - int output_elsewhere = strcmp(filename, outname); - extern int check_patch; - - statfailed = stat(filename, &filestat); - if (statfailed && ok_to_create_file) { - if (verbose) - say2("(Creating file %s...)\n",filename); - if (check_patch) - return TRUE; - makedirs(filename, TRUE); - close(creat(filename, 0666)); - statfailed = stat(filename, &filestat); - } - if (statfailed && check_patch) { - fatal2("%s not found and in check_patch mode.", filename); - } - /* - * For nonexistent or read-only files, look for RCS or SCCS - * versions. - */ - if (statfailed || - (! output_elsewhere && - (/* No one can write to it. */ - (filestat.st_mode & 0222) == 0 || - /* I can't write to it. */ - ((filestat.st_mode & 0022) == 0 && filestat.st_uid != myuid)))) { - struct stat cstat; - char *cs = Nullch; - char *filebase; - int pathlen; - - filebase = basename(filename); - pathlen = filebase - filename; - - /* - * Put any leading path into `s'. - * Leave room in lbuf for the diff command. - */ - s = lbuf + 20; - strncpy(s, filename, pathlen); - -#define try(f,a1,a2) (Sprintf(s + pathlen, f, a1, a2), stat(s, &cstat) == 0) - if ((try("RCS/%s%s", filebase, RCSSUFFIX) || - try("RCS/%s%s", filebase, "") || - try("%s%s", filebase, RCSSUFFIX)) && - /* - * Check that RCS file is not working file. - * Some hosts don't report file name length errors. - */ - (statfailed || - ((filestat.st_dev ^ cstat.st_dev) | - (filestat.st_ino ^ cstat.st_ino)))) { - Sprintf(buf, output_elsewhere?CHECKOUT:CHECKOUT_LOCKED, filename); - Sprintf(lbuf, RCSDIFF, filename); - cs = "RCS"; - } else if (try("SCCS/%s%s", SCCSPREFIX, filebase) || - try("%s%s", SCCSPREFIX, filebase)) { - Sprintf(buf, output_elsewhere?GET:GET_LOCKED, s); - Sprintf(lbuf, SCCSDIFF, s, filename); - cs = "SCCS"; - } else if (statfailed) - fatal2("can't find %s\n", filename); - /* - * else we can't write to it but it's not under a version - * control system, so just proceed. - */ - if (cs) { - if (!statfailed) { - if ((filestat.st_mode & 0222) != 0) - /* The owner can write to it. */ - fatal3( -"file %s seems to be locked by somebody else under %s\n", - filename, cs); - /* - * It might be checked out unlocked. See if - * it's safe to check out the default version - * locked. - */ - if (verbose) - say3( -"Comparing file %s to default %s version...\n", - filename, cs); - if (system(lbuf)) - fatal3( -"can't check out file %s: differs from default %s version\n", - filename, cs); - } - if (verbose) - say3("Checking out file %s from %s...\n", filename, cs); - if (system(buf) || stat(filename, &filestat)) - fatal3("can't check out file %s from %s\n", - filename, cs); - } - } - filemode = filestat.st_mode; - if (!S_ISREG(filemode)) - 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 - /* - * Lint says this may alloc less than i_size, - * but that's okay, I think. - */ - i_womp = malloc((MEM)(i_size + 2)); -#endif - if (i_womp == Nullch) - return FALSE; - if ((ifd = open(filename, 0)) < 0) - pfatal2("can't open file %s", filename); -#ifndef lint - if (read(ifd, i_womp, (int)i_size) != i_size) { - /* - * This probably means i_size > 15 or 16 bits worth. At - * this point it doesn't matter if i_womp was undersized. - */ - Close(ifd); - free(i_womp); - return FALSE; - } -#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') { - /* These are NOT null terminated. */ - i_ptr[++iline] = s + 1; - } - } - 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 if (batch) { - fatal2( -"this file doesn't appear to be the %s version--aborting.\n", revision); - } else { - (void) 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(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) - pfatal2("can't open file %s", filename); - if ((tifd = creat(TMPINNAME, 0666)) < 0) - pfatal2("can't open file %s", TMPINNAME); - while (fgets(buf, buf_size, 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 if (batch) { - fatal2( -"this file doesn't appear to be the %s version--aborting.\n", revision); - } else { - (void) 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("out of memory\n"); - for (i = 1; ; i++) { - if (! (i % lines_per_buf)) /* New block. */ - if (write(tifd, tibuf[0], BUFFERSIZE) < BUFFERSIZE) - pfatal1("can't write temp file"); - 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) - pfatal1("can't write temp file"); - break; - } - } - Fclose(ifp); - Close(tifd); - if ((tifd = open(TMPINNAME, 0)) < 0) { - pfatal2("can't reopen file %s", 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, (long)baseline / lines_per_buf * BUFFERSIZE, 0); -#endif - if (read(tifd, tibuf[whichbuf], BUFFERSIZE) < 0) - pfatal2("error reading tmp file %s", TMPINNAME); - } - return tibuf[whichbuf] + (tireclen * offline); - } -} - -/* - * True if the string argument contains the revision number we want. - */ -bool -rev_in_string(char *string) -{ - Reg1 char *s; - Reg2 int patlen; - - if (revision == Nullch) - return TRUE; - patlen = strlen(revision); - if (strnEQ(string,revision,patlen) && - isspace((unsigned char)string[patlen])) - return TRUE; - for (s = string; *s; s++) { - if (isspace((unsigned char)*s) && - strnEQ(s + 1, revision, patlen) && - isspace((unsigned char)s[patlen + 1] )) { - return TRUE; - } - } - return FALSE; -} |