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-rw-r--r--gnu/usr.bin/patch/pch.c1449
1 files changed, 0 insertions, 1449 deletions
diff --git a/gnu/usr.bin/patch/pch.c b/gnu/usr.bin/patch/pch.c
deleted file mode 100644
index 37bbe56..0000000
--- a/gnu/usr.bin/patch/pch.c
+++ /dev/null
@@ -1,1449 +0,0 @@
-/* $FreeBSD$
- *
- * $Log: pch.c,v $
- * Revision 2.0.2.0 90/05/01 22:17:51 davison
- * patch12u: unidiff support added
- *
- * Revision 2.0.1.7 88/06/03 15:13:28 lwall
- * patch10: Can now find patches in shar scripts.
- * patch10: Hunks that swapped and then swapped back could core dump.
- *
- * Revision 2.0.1.6 87/06/04 16:18:13 lwall
- * pch_swap didn't swap p_bfake and p_efake.
- *
- * Revision 2.0.1.5 87/01/30 22:47:42 lwall
- * Improved responses to mangled patches.
- *
- * Revision 2.0.1.4 87/01/05 16:59:53 lwall
- * New-style context diffs caused double call to free().
- *
- * Revision 2.0.1.3 86/11/14 10:08:33 lwall
- * Fixed problem where a long pattern wouldn't grow the hunk.
- * Also restored p_input_line when backtracking so error messages are right.
- *
- * Revision 2.0.1.2 86/11/03 17:49:52 lwall
- * New-style delete triggers spurious assertion error.
- *
- * Revision 2.0.1.1 86/10/29 15:52:08 lwall
- * Could falsely report new-style context diff.
- *
- * Revision 2.0 86/09/17 15:39:37 lwall
- * Baseline for netwide release.
- *
- */
-
-#include "EXTERN.h"
-#include "common.h"
-#include "util.h"
-#include "INTERN.h"
-#include "pch.h"
-
-/* Patch (diff listing) abstract type. */
-
-static long p_filesize; /* size of the patch file */
-static LINENUM p_first; /* 1st line number */
-static LINENUM p_newfirst; /* 1st line number of replacement */
-static LINENUM p_ptrn_lines; /* # lines in pattern */
-static LINENUM p_repl_lines; /* # lines in replacement text */
-static LINENUM p_end = -1; /* last line in hunk */
-static LINENUM p_max; /* max allowed value of p_end */
-static LINENUM p_context = 3; /* # of context lines */
-static LINENUM p_input_line = 0; /* current line # from patch file */
-static char **p_line = Null(char**); /* the text of the hunk */
-static short *p_len = Null(short*); /* length of each line */
-static char *p_Char = Nullch; /* +, -, and ! */
-static int hunkmax = INITHUNKMAX; /* size of above arrays to begin with */
-static int p_indent; /* indent to patch */
-static LINENUM p_base; /* where to intuit this time */
-static LINENUM p_bline; /* line # of p_base */
-static LINENUM p_start; /* where intuit found a patch */
-static LINENUM p_sline; /* and the line number for it */
-static LINENUM p_hunk_beg; /* line number of current hunk */
-static LINENUM p_efake = -1; /* end of faked up lines--don't free */
-static LINENUM p_bfake = -1; /* beg of faked up lines */
-
-/*
- * Prepare to look for the next patch in the patch file.
- */
-void
-re_patch(void)
-{
- p_first = Nulline;
- p_newfirst = Nulline;
- p_ptrn_lines = Nulline;
- p_repl_lines = Nulline;
- p_end = (LINENUM)-1;
- p_max = Nulline;
- p_indent = 0;
-}
-
-/*
- * Open the patch file at the beginning of time.
- */
-void
-open_patch_file(char *filename)
-{
- int nr, nw;
-
- if (filename == Nullch || !*filename || strEQ(filename, "-")) {
- pfp = fopen(TMPPATNAME, "w");
- if (pfp == Nullfp)
- pfatal2("can't create %s", TMPPATNAME);
- while ((nr = fread(buf, 1, buf_size, stdin)) > 0) {
- nw = fwrite(buf, 1, nr, pfp);
- if (nr != nw)
- pfatal2("write error to %s", TMPPATNAME);
- }
- Fclose(pfp);
- filename = TMPPATNAME;
- }
- pfp = fopen(filename, "r");
- if (pfp == Nullfp)
- pfatal2("patch file %s not found", filename);
- Fstat(fileno(pfp), &filestat);
- p_filesize = filestat.st_size;
- next_intuit_at(0L,1L); /* start at the beginning */
- set_hunkmax();
-}
-
-/*
- * Make sure our dynamically realloced tables are malloced to begin with.
- */
-void
-set_hunkmax(void)
-{
-#ifndef lint
- if (p_line == Null(char**))
- p_line = (char**) malloc((MEM)hunkmax * sizeof(char *));
- if (p_len == Null(short*))
- p_len = (short*) malloc((MEM)hunkmax * sizeof(short));
-#endif
- if (p_Char == Nullch)
- p_Char = (char*) malloc((MEM)hunkmax * sizeof(char));
-}
-
-/*
- * Enlarge the arrays containing the current hunk of patch.
- */
-void
-grow_hunkmax(void)
-{
- hunkmax *= 2;
- /*
- * Note that on most systems, only the p_line array ever gets
- * fresh memory since p_len can move into p_line's old space,
- * and p_Char can move into p_len's old space. Not on PDP-11's
- * however. But it doesn't matter.
- */
- assert(p_line != Null(char**) && p_len != Null(short*) &&
- p_Char != Nullch);
-#ifndef lint
- p_line = (char**) realloc((char*)p_line, (MEM)hunkmax * sizeof(char *));
- p_len = (short*) realloc((char*)p_len, (MEM)hunkmax * sizeof(short));
- p_Char = (char*) realloc((char*)p_Char, (MEM)hunkmax * sizeof(char));
-#endif
- if (p_line != Null(char**) && p_len != Null(short*) && p_Char != Nullch)
- return;
- if (!using_plan_a)
- fatal1("out of memory\n");
- out_of_mem = TRUE; /* whatever is null will be allocated again */
- /* from within plan_a(), of all places */
-}
-
-/*
- * True if the remainder of the patch file contains a diff of some sort.
- */
-bool
-there_is_another_patch(void)
-{
- if (p_base != 0L && p_base >= p_filesize) {
- if (verbose)
- say1("done\n");
- return FALSE;
- }
- if (verbose)
- say1("Hmm...");
- diff_type = intuit_diff_type();
- if (!diff_type) {
- if (p_base != 0L) {
- if (verbose)
- say1(" Ignoring the trailing garbage.\ndone\n");
- }
- else
- say1(" I can't seem to find a patch in there anywhere.\n");
- return FALSE;
- }
- if (verbose)
- say3(" %sooks like %s to me...\n",
- (p_base == 0L ? "L" : "The next patch l"),
- diff_type == UNI_DIFF ? "a unified diff" :
- diff_type == CONTEXT_DIFF ? "a context diff" :
- diff_type == NEW_CONTEXT_DIFF ?
- "a new-style context diff" :
- diff_type == NORMAL_DIFF ? "a normal diff" :
- "an ed script" );
- if (p_indent && verbose)
- say3("(Patch is indented %d space%s.)\n",
- p_indent, p_indent==1?"":"s");
- skip_to(p_start,p_sline);
- while (filearg[0] == Nullch) {
- if (force || batch || skip_rest_of_patch) {
- say1("No file to patch. Skipping...\n");
- filearg[0] = savestr(bestguess);
- skip_rest_of_patch = TRUE;
- return TRUE;
- }
- (void) ask1("File to patch: ");
- if (*buf != '\n') {
- if (bestguess)
- free(bestguess);
- bestguess = savestr(buf);
- filearg[0] = fetchname(buf, 0, FALSE);
- }
- if (filearg[0] == Nullch) {
- if (ask1("No file found--skip this patch? [n] ")) {
- if (*buf != 'y') {
- continue;
- }
- }
- if (verbose)
- say1("Skipping patch...\n");
- filearg[0] = fetchname(bestguess, 0, TRUE);
- skip_rest_of_patch = TRUE;
- return TRUE;
- }
- }
- return TRUE;
-}
-
-static char *
-p4_savestr(char *str)
-{
- char *t, *h;
-
- /* Leading whitespace. */
- while (isspace((unsigned char)*str))
- str++;
-
- /* Remove the file revision number. */
- for (t = str, h = NULL; *t != '\0' && !isspace((unsigned char)*t); t++)
- if (*t == '#')
- h = t;
- if (h != NULL)
- *h = '\0';
-
- return savestr(str);
-}
-
-/*
- * Determine what kind of diff is in the remaining part of the patch file.
- */
-int
-intuit_diff_type(void)
-{
- Reg4 long this_line = 0;
- Reg5 long previous_line;
- Reg6 long first_command_line = -1;
- long fcl_line;
- Reg7 bool last_line_was_command = FALSE;
- Reg8 bool this_is_a_command = FALSE;
- Reg9 bool stars_last_line = FALSE;
- Reg10 bool stars_this_line = FALSE;
- Reg3 int indent;
- Reg1 char *s;
- Reg2 char *t;
- char *indtmp = Nullch;
- char *oldtmp = Nullch;
- char *newtmp = Nullch;
- char *indname = Nullch;
- char *oldname = Nullch;
- char *newname = Nullch;
- Reg11 int retval;
- bool no_filearg = (filearg[0] == Nullch);
- extern int index_first;
-
- ok_to_create_file = FALSE;
- Fseek(pfp, p_base, 0);
- p_input_line = p_bline - 1;
- for (;;) {
- previous_line = this_line;
- last_line_was_command = this_is_a_command;
- stars_last_line = stars_this_line;
- this_line = ftell(pfp);
- indent = 0;
- p_input_line++;
- if (pgets(FALSE) == 0) {
- if (first_command_line >= 0L) {
- /* nothing but deletes!? */
- p_start = first_command_line;
- p_sline = fcl_line;
- retval = ED_DIFF;
- goto scan_exit;
- }
- else {
- p_start = this_line;
- p_sline = p_input_line;
- retval = 0;
- goto scan_exit;
- }
- }
- for (s = buf; *s == ' ' || *s == '\t' || *s == 'X'; s++) {
- if (*s == '\t')
- indent += 8 - (indent % 8);
- else
- indent++;
- }
- for (t=s; isdigit((unsigned char)*t) || *t == ','; t++)
- ;
- this_is_a_command = (isdigit((unsigned char)*s) &&
- (*t == 'd' || *t == 'c' || *t == 'a') );
- if (first_command_line < 0L && this_is_a_command) {
- first_command_line = this_line;
- fcl_line = p_input_line;
- p_indent = indent; /* assume this for now */
- }
- if (!stars_last_line && strnEQ(s, "*** ", 4))
- oldtmp = savestr(s+4);
- else if (strnEQ(s, "--- ", 4))
- newtmp = savestr(s+4);
- else if (strnEQ(s, "+++ ", 4))
- oldtmp = savestr(s+4); /* pretend it is the old name */
- else if (strnEQ(s, "Index:", 6))
- indtmp = savestr(s+6);
- else if (strnEQ(s, "Prereq:", 7)) {
- for (t = s + 7; isspace((unsigned char)*t); t++)
- ;
- revision = savestr(t);
- for (t = revision; *t && !isspace((unsigned char)*t);
- t++)
- ;
- *t = '\0';
- if (!*revision) {
- free(revision);
- revision = Nullch;
- }
- } else if (strnEQ(s, "==== ", 5)) {
- /* Perforce-style diffs. */
- if ((t = strstr(s + 5, " - ")) != NULL)
- newtmp = p4_savestr(t + 3);
- oldtmp = p4_savestr(s + 5);
- }
- if ((!diff_type || diff_type == ED_DIFF) &&
- first_command_line >= 0L &&
- strEQ(s, ".\n") ) {
- p_indent = indent;
- p_start = first_command_line;
- p_sline = fcl_line;
- retval = ED_DIFF;
- goto scan_exit;
- }
- if ((!diff_type || diff_type == UNI_DIFF) &&
- strnEQ(s, "@@ -", 4)) {
- if (!atol(s+3))
- ok_to_create_file = TRUE;
- p_indent = indent;
- p_start = this_line;
- p_sline = p_input_line;
- retval = UNI_DIFF;
- goto scan_exit;
- }
- stars_this_line = strnEQ(s, "********", 8);
- if ((!diff_type || diff_type == CONTEXT_DIFF) &&
- stars_last_line &&
- strnEQ(s, "*** ", 4)) {
- if (!atol(s+4))
- ok_to_create_file = TRUE;
- /*
- * If this is a new context diff the character just
- * before the newline is a '*'.
- */
- while (*s != '\n')
- s++;
- p_indent = indent;
- p_start = previous_line;
- p_sline = p_input_line - 1;
- retval = (*(s-1) == '*' ?
- NEW_CONTEXT_DIFF : CONTEXT_DIFF);
- goto scan_exit;
- }
- if ((!diff_type || diff_type == NORMAL_DIFF) &&
- last_line_was_command &&
- (strnEQ(s, "< ", 2) || strnEQ(s, "> ", 2)) ) {
- p_start = previous_line;
- p_sline = p_input_line - 1;
- p_indent = indent;
- retval = NORMAL_DIFF;
- goto scan_exit;
- }
- }
- scan_exit:
- if (no_filearg) {
- if (indtmp != Nullch)
- indname = fetchname(indtmp, strippath,
- ok_to_create_file);
- if (oldtmp != Nullch)
- oldname = fetchname(oldtmp, strippath,
- ok_to_create_file);
- if (newtmp != Nullch)
- newname = fetchname(newtmp, strippath,
- ok_to_create_file);
- if (index_first && indname)
- filearg[0] = savestr(indname);
- else if (oldname && newname) {
- if (strlen(oldname) < strlen(newname))
- filearg[0] = savestr(oldname);
- else
- filearg[0] = savestr(newname);
- } else if (indname)
- filearg[0] = savestr(indname);
- else if (oldname)
- filearg[0] = savestr(oldname);
- else if (newname)
- filearg[0] = savestr(newname);
- }
- if (bestguess) {
- free(bestguess);
- bestguess = Nullch;
- }
- if (filearg[0] != Nullch)
- bestguess = savestr(filearg[0]);
- else if (indtmp != Nullch)
- bestguess = fetchname(indtmp, strippath, TRUE);
- else {
- if (oldtmp != Nullch)
- oldname = fetchname(oldtmp, strippath, TRUE);
- if (newtmp != Nullch)
- newname = fetchname(newtmp, strippath, TRUE);
- if (oldname && newname) {
- if (strlen(oldname) < strlen(newname))
- bestguess = savestr(oldname);
- else
- bestguess = savestr(newname);
- }
- else if (oldname)
- bestguess = savestr(oldname);
- else if (newname)
- bestguess = savestr(newname);
- }
- if (indtmp != Nullch)
- free(indtmp);
- if (oldtmp != Nullch)
- free(oldtmp);
- if (newtmp != Nullch)
- free(newtmp);
- if (indname != Nullch)
- free(indname);
- if (oldname != Nullch)
- free(oldname);
- if (newname != Nullch)
- free(newname);
- return retval;
-}
-
-/*
- * Remember where this patch ends so we know where to start up again.
- */
-void
-next_intuit_at(long file_pos, long file_line)
-{
- p_base = file_pos;
- p_bline = file_line;
-}
-
-/*
- * Basically a verbose fseek() to the actual diff listing.
- */
-void
-skip_to(long file_pos, long file_line)
-{
- size_t len;
-
- assert(p_base <= file_pos);
- if (verbose && p_base < file_pos) {
- Fseek(pfp, p_base, 0);
- say1("The text leading up to this was:\n--------------------------\n");
- while (ftell(pfp) < file_pos) {
- len = pgets(FALSE);
- assert(len != 0);
- say2("|%s", buf);
- }
- say1("--------------------------\n");
- }
- else
- Fseek(pfp, file_pos, 0);
- p_input_line = file_line - 1;
-}
-
-/*
- * Make this a function for better debugging.
- */
-static void
-malformed(void)
-{
- fatal3("malformed patch at line %ld: %s", p_input_line, buf);
- /* about as informative as "Syntax error" in C */
-}
-
-/*
- * True if the line has been discarded (i.e. it is a line saying
- * "\ No newline at end of file".)
- */
-static bool
-remove_special_line(void)
-{
- int c;
-
- c = fgetc(pfp);
- if (c == '\\') {
- do {
- c = fgetc(pfp);
- } while (c != EOF && c != '\n');
-
- return TRUE;
- }
-
- if (c != EOF)
- fseek(pfp, -1, SEEK_CUR);
-
- return FALSE;
-}
-
-/*
- * True if there is more of the current diff listing to process.
- */
-bool
-another_hunk(void)
-{
- Reg1 char *s;
- size_t len;
- Reg2 int context = 0;
-
- while (p_end >= 0) {
- if (p_end == p_efake)
- p_end = p_bfake; /* don't free twice */
- else
- free(p_line[p_end]);
- p_end--;
- }
- assert(p_end == -1);
- p_efake = -1;
-
- p_max = hunkmax; /* gets reduced when --- found */
- if (diff_type == CONTEXT_DIFF || diff_type == NEW_CONTEXT_DIFF) {
- long line_beginning = ftell(pfp);
- /* file pos of the current line */
- LINENUM repl_beginning = 0; /* index of --- line */
- Reg4 LINENUM fillcnt = 0; /* #lines of missing ptrn or repl */
- Reg5 LINENUM fillsrc; /* index of first line to copy */
- Reg6 LINENUM filldst; /* index of first missing line */
- bool ptrn_spaces_eaten = FALSE; /* ptrn was slightly misformed */
- Reg9 bool repl_could_be_missing = TRUE;
- /* no + or ! lines in this hunk */
- bool repl_missing = FALSE; /* we are now backtracking */
- long repl_backtrack_position = 0;
- /* file pos of first repl line */
- LINENUM repl_patch_line; /* input line number for same */
- Reg7 LINENUM ptrn_copiable = 0;
- /* # of copiable lines in ptrn */
-
- len = pgets(TRUE);
- p_input_line++;
- if (len == 0 || strnNE(buf, "********", 8)) {
- next_intuit_at(line_beginning,p_input_line);
- return FALSE;
- }
- p_context = 100;
- p_hunk_beg = p_input_line + 1;
- while (p_end < p_max) {
- line_beginning = ftell(pfp);
- len = pgets(TRUE);
- p_input_line++;
- if (len == 0) {
- if (p_max - p_end < 4)
- Strcpy(buf, " \n"); /* assume blank lines got chopped */
- else {
- if (repl_beginning && repl_could_be_missing) {
- repl_missing = TRUE;
- goto hunk_done;
- }
- fatal1("unexpected end of file in patch\n");
- }
- }
- p_end++;
- assert(p_end < hunkmax);
- p_Char[p_end] = *buf;
-#ifdef zilog
- p_line[(short)p_end] = Nullch;
-#else
- p_line[p_end] = Nullch;
-#endif
- switch (*buf) {
- case '*':
- if (strnEQ(buf, "********", 8)) {
- if (repl_beginning && repl_could_be_missing) {
- repl_missing = TRUE;
- goto hunk_done;
- }
- else
- fatal2("unexpected end of hunk at line %ld\n",
- p_input_line);
- }
- if (p_end != 0) {
- if (repl_beginning && repl_could_be_missing) {
- repl_missing = TRUE;
- goto hunk_done;
- }
- fatal3("unexpected *** at line %ld: %s", p_input_line, buf);
- }
- context = 0;
- p_line[p_end] = savestr(buf);
- if (out_of_mem) {
- p_end--;
- return FALSE;
- }
- for (s=buf; *s && !isdigit((unsigned char)*s); s++) ;
- if (!*s)
- malformed ();
- if (strnEQ(s,"0,0",3))
- strcpy(s,s+2);
- p_first = (LINENUM) atol(s);
- while (isdigit((unsigned char)*s)) s++;
- if (*s == ',') {
- for (; *s && !isdigit((unsigned char)*s); s++) ;
- if (!*s)
- malformed ();
- p_ptrn_lines = ((LINENUM)atol(s)) - p_first + 1;
- }
- else if (p_first)
- p_ptrn_lines = 1;
- else {
- p_ptrn_lines = 0;
- p_first = 1;
- }
- p_max = p_ptrn_lines + 6; /* we need this much at least */
- while (p_max >= hunkmax)
- grow_hunkmax();
- p_max = hunkmax;
- break;
- case '-':
- if (buf[1] == '-') {
- if (repl_beginning ||
- (p_end != p_ptrn_lines + 1 + (p_Char[p_end-1] == '\n')))
- {
- if (p_end == 1) {
- /* `old' lines were omitted - set up to fill */
- /* them in from 'new' context lines. */
- p_end = p_ptrn_lines + 1;
- fillsrc = p_end + 1;
- filldst = 1;
- fillcnt = p_ptrn_lines;
- }
- else {
- if (repl_beginning) {
- if (repl_could_be_missing){
- repl_missing = TRUE;
- goto hunk_done;
- }
- fatal3(
-"duplicate \"---\" at line %ld--check line numbers at line %ld\n",
- p_input_line, p_hunk_beg + repl_beginning);
- }
- else {
- fatal4(
-"%s \"---\" at line %ld--check line numbers at line %ld\n",
- (p_end <= p_ptrn_lines
- ? "Premature"
- : "Overdue" ),
- p_input_line, p_hunk_beg);
- }
- }
- }
- repl_beginning = p_end;
- repl_backtrack_position = ftell(pfp);
- repl_patch_line = p_input_line;
- p_line[p_end] = savestr(buf);
- if (out_of_mem) {
- p_end--;
- return FALSE;
- }
- p_Char[p_end] = '=';
- for (s=buf; *s && !isdigit((unsigned char)*s); s++) ;
- if (!*s)
- malformed ();
- p_newfirst = (LINENUM) atol(s);
- while (isdigit((unsigned char)*s)) s++;
- if (*s == ',') {
- for (; *s && !isdigit((unsigned char)*s); s++) ;
- if (!*s)
- malformed ();
- p_repl_lines = ((LINENUM)atol(s)) - p_newfirst + 1;
- }
- else if (p_newfirst)
- p_repl_lines = 1;
- else {
- p_repl_lines = 0;
- p_newfirst = 1;
- }
- p_max = p_repl_lines + p_end;
- if (p_max > MAXHUNKSIZE)
- fatal4("hunk too large (%ld lines) at line %ld: %s",
- p_max, p_input_line, buf);
- while (p_max >= hunkmax)
- grow_hunkmax();
- if (p_repl_lines != ptrn_copiable
- && (p_context != 0 || p_repl_lines != 1))
- repl_could_be_missing = FALSE;
- break;
- }
- goto change_line;
- case '+': case '!':
- repl_could_be_missing = FALSE;
- change_line:
- if (buf[1] == '\n' && canonicalize)
- strcpy(buf+1," \n");
- if (!isspace((unsigned char)buf[1]) && buf[1] != '>' && buf[1] != '<' &&
- repl_beginning && repl_could_be_missing) {
- repl_missing = TRUE;
- goto hunk_done;
- }
- if (context >= 0) {
- if (context < p_context)
- p_context = context;
- context = -1000;
- }
- p_line[p_end] = savestr(buf+2);
- if (out_of_mem) {
- p_end--;
- return FALSE;
- }
- if (p_end == p_ptrn_lines)
- {
- if (remove_special_line()) {
- int len;
-
- len = strlen(p_line[p_end]) - 1;
- (p_line[p_end])[len] = 0;
- }
- }
- break;
- case '\t': case '\n': /* assume the 2 spaces got eaten */
- if (repl_beginning && repl_could_be_missing &&
- (!ptrn_spaces_eaten || diff_type == NEW_CONTEXT_DIFF) ) {
- repl_missing = TRUE;
- goto hunk_done;
- }
- p_line[p_end] = savestr(buf);
- if (out_of_mem) {
- p_end--;
- return FALSE;
- }
- if (p_end != p_ptrn_lines + 1) {
- ptrn_spaces_eaten |= (repl_beginning != 0);
- context++;
- if (!repl_beginning)
- ptrn_copiable++;
- p_Char[p_end] = ' ';
- }
- break;
- case ' ':
- if (!isspace((unsigned char)buf[1]) &&
- repl_beginning && repl_could_be_missing) {
- repl_missing = TRUE;
- goto hunk_done;
- }
- context++;
- if (!repl_beginning)
- ptrn_copiable++;
- p_line[p_end] = savestr(buf+2);
- if (out_of_mem) {
- p_end--;
- return FALSE;
- }
- break;
- default:
- if (repl_beginning && repl_could_be_missing) {
- repl_missing = TRUE;
- goto hunk_done;
- }
- malformed ();
- }
- /* set up p_len for strncmp() so we don't have to */
- /* assume null termination */
- if (p_line[p_end])
- p_len[p_end] = strlen(p_line[p_end]);
- else
- p_len[p_end] = 0;
- }
-
- hunk_done:
- if (p_end >=0 && !repl_beginning)
- fatal2("no --- found in patch at line %ld\n", pch_hunk_beg());
-
- if (repl_missing) {
-
- /* reset state back to just after --- */
- p_input_line = repl_patch_line;
- for (p_end--; p_end > repl_beginning; p_end--)
- free(p_line[p_end]);
- Fseek(pfp, repl_backtrack_position, 0);
-
- /* redundant 'new' context lines were omitted - set */
- /* up to fill them in from the old file context */
- if (!p_context && p_repl_lines == 1) {
- p_repl_lines = 0;
- p_max--;
- }
- fillsrc = 1;
- filldst = repl_beginning+1;
- fillcnt = p_repl_lines;
- p_end = p_max;
- }
- else if (!p_context && fillcnt == 1) {
- /* the first hunk was a null hunk with no context */
- /* and we were expecting one line -- fix it up. */
- while (filldst < p_end) {
- p_line[filldst] = p_line[filldst+1];
- p_Char[filldst] = p_Char[filldst+1];
- p_len[filldst] = p_len[filldst+1];
- filldst++;
- }
-#if 0
- repl_beginning--; /* this doesn't need to be fixed */
-#endif
- p_end--;
- p_first++; /* do append rather than insert */
- fillcnt = 0;
- p_ptrn_lines = 0;
- }
-
- if (diff_type == CONTEXT_DIFF &&
- (fillcnt || (p_first > 1 && ptrn_copiable > 2*p_context)) ) {
- if (verbose)
- say4("%s\n%s\n%s\n",
-"(Fascinating--this is really a new-style context diff but without",
-"the telltale extra asterisks on the *** line that usually indicate",
-"the new style...)");
- diff_type = NEW_CONTEXT_DIFF;
- }
-
- /* if there were omitted context lines, fill them in now */
- if (fillcnt) {
- p_bfake = filldst; /* remember where not to free() */
- p_efake = filldst + fillcnt - 1;
- while (fillcnt-- > 0) {
- while (fillsrc <= p_end && p_Char[fillsrc] != ' ')
- fillsrc++;
- if (fillsrc > p_end)
- fatal2("replacement text or line numbers mangled in hunk at line %ld\n",
- p_hunk_beg);
- p_line[filldst] = p_line[fillsrc];
- p_Char[filldst] = p_Char[fillsrc];
- p_len[filldst] = p_len[fillsrc];
- fillsrc++; filldst++;
- }
- while (fillsrc <= p_end && fillsrc != repl_beginning &&
- p_Char[fillsrc] != ' ')
- fillsrc++;
-#ifdef DEBUGGING
- if (debug & 64)
- printf("fillsrc %ld, filldst %ld, rb %ld, e+1 %ld\n",
- fillsrc,filldst,repl_beginning,p_end+1);
-#endif
- assert(fillsrc==p_end+1 || fillsrc==repl_beginning);
- assert(filldst==p_end+1 || filldst==repl_beginning);
- }
-
- if (p_line[p_end] != NULL)
- {
- if (remove_special_line()) {
- p_len[p_end] -= 1;
- (p_line[p_end])[p_len[p_end]] = 0;
- }
- }
- }
- else if (diff_type == UNI_DIFF) {
- long line_beginning = ftell(pfp);
- /* file pos of the current line */
- Reg4 LINENUM fillsrc; /* index of old lines */
- Reg5 LINENUM filldst; /* index of new lines */
- char ch;
-
- len = pgets(TRUE);
- p_input_line++;
- if (len == 0 || strnNE(buf, "@@ -", 4)) {
- next_intuit_at(line_beginning,p_input_line);
- return FALSE;
- }
- s = buf+4;
- if (!*s)
- malformed ();
- p_first = (LINENUM) atol(s);
- while (isdigit((unsigned char)*s)) s++;
- if (*s == ',') {
- p_ptrn_lines = (LINENUM) atol(++s);
- while (isdigit((unsigned char)*s)) s++;
- } else
- p_ptrn_lines = 1;
- if (*s == ' ') s++;
- if (*s != '+' || !*++s)
- malformed ();
- p_newfirst = (LINENUM) atol(s);
- while (isdigit((unsigned char)*s)) s++;
- if (*s == ',') {
- p_repl_lines = (LINENUM) atol(++s);
- while (isdigit((unsigned char)*s)) s++;
- } else
- p_repl_lines = 1;
- if (*s == ' ') s++;
- if (*s != '@')
- malformed ();
- if (!p_ptrn_lines)
- p_first++; /* do append rather than insert */
- p_max = p_ptrn_lines + p_repl_lines + 1;
- while (p_max >= hunkmax)
- grow_hunkmax();
- fillsrc = 1;
- filldst = fillsrc + p_ptrn_lines;
- p_end = filldst + p_repl_lines;
- Sprintf(buf,"*** %ld,%ld ****\n",p_first,p_first + p_ptrn_lines - 1);
- p_line[0] = savestr(buf);
- if (out_of_mem) {
- p_end = -1;
- return FALSE;
- }
- p_Char[0] = '*';
- Sprintf(buf,"--- %ld,%ld ----\n",p_newfirst,p_newfirst+p_repl_lines-1);
- p_line[filldst] = savestr(buf);
- if (out_of_mem) {
- p_end = 0;
- return FALSE;
- }
- p_Char[filldst++] = '=';
- p_context = 100;
- context = 0;
- p_hunk_beg = p_input_line + 1;
- while (fillsrc <= p_ptrn_lines || filldst <= p_end) {
- line_beginning = ftell(pfp);
- len = pgets(TRUE);
- p_input_line++;
- if (len == 0) {
- if (p_max - filldst < 3)
- Strcpy(buf, " \n"); /* assume blank lines got chopped */
- else {
- fatal1("unexpected end of file in patch\n");
- }
- }
- if (*buf == '\t' || *buf == '\n') {
- ch = ' '; /* assume the space got eaten */
- s = savestr(buf);
- }
- else {
- ch = *buf;
- s = savestr(buf+1);
- }
- if (out_of_mem) {
- while (--filldst > p_ptrn_lines)
- free(p_line[filldst]);
- p_end = fillsrc-1;
- return FALSE;
- }
- switch (ch) {
- case '-':
- if (fillsrc > p_ptrn_lines) {
- free(s);
- p_end = filldst-1;
- malformed ();
- }
- p_Char[fillsrc] = ch;
- p_line[fillsrc] = s;
- p_len[fillsrc++] = strlen(s);
- if (fillsrc > p_ptrn_lines) {
- if (remove_special_line()) {
- p_len[fillsrc - 1] -= 1;
- s[p_len[fillsrc - 1]] = 0;
- }
- }
- break;
- case '=':
- ch = ' ';
- /* FALLTHROUGH */
- case ' ':
- if (fillsrc > p_ptrn_lines) {
- free(s);
- while (--filldst > p_ptrn_lines)
- free(p_line[filldst]);
- p_end = fillsrc-1;
- malformed ();
- }
- context++;
- p_Char[fillsrc] = ch;
- p_line[fillsrc] = s;
- p_len[fillsrc++] = strlen(s);
- s = savestr(s);
- if (out_of_mem) {
- while (--filldst > p_ptrn_lines)
- free(p_line[filldst]);
- p_end = fillsrc-1;
- return FALSE;
- }
- /* FALLTHROUGH */
- case '+':
- if (filldst > p_end) {
- free(s);
- while (--filldst > p_ptrn_lines)
- free(p_line[filldst]);
- p_end = fillsrc-1;
- malformed ();
- }
- p_Char[filldst] = ch;
- p_line[filldst] = s;
- p_len[filldst++] = strlen(s);
- if (fillsrc > p_ptrn_lines) {
- if (remove_special_line()) {
- p_len[filldst - 1] -= 1;
- s[p_len[filldst - 1]] = 0;
- }
- }
- break;
- default:
- p_end = filldst;
- malformed ();
- }
- if (ch != ' ' && context > 0) {
- if (context < p_context)
- p_context = context;
- context = -1000;
- }
- }/* while */
- }
- else { /* normal diff--fake it up */
- char hunk_type;
- Reg3 int i;
- LINENUM min, max;
- long line_beginning = ftell(pfp);
-
- p_context = 0;
- len = pgets(TRUE);
- p_input_line++;
- if (len == 0 || !isdigit((unsigned char)*buf)) {
- next_intuit_at(line_beginning,p_input_line);
- return FALSE;
- }
- p_first = (LINENUM)atol(buf);
- for (s=buf; isdigit((unsigned char)*s); s++) ;
- if (*s == ',') {
- p_ptrn_lines = (LINENUM)atol(++s) - p_first + 1;
- while (isdigit((unsigned char)*s)) s++;
- }
- else
- p_ptrn_lines = (*s != 'a');
- hunk_type = *s;
- if (hunk_type == 'a')
- p_first++; /* do append rather than insert */
- min = (LINENUM)atol(++s);
- for (; isdigit((unsigned char)*s); s++) ;
- if (*s == ',')
- max = (LINENUM)atol(++s);
- else
- max = min;
- if (hunk_type == 'd')
- min++;
- p_end = p_ptrn_lines + 1 + max - min + 1;
- if (p_end > MAXHUNKSIZE)
- fatal4("hunk too large (%ld lines) at line %ld: %s",
- p_end, p_input_line, buf);
- while (p_end >= hunkmax)
- grow_hunkmax();
- p_newfirst = min;
- p_repl_lines = max - min + 1;
- Sprintf(buf, "*** %ld,%ld\n", p_first, p_first + p_ptrn_lines - 1);
- p_line[0] = savestr(buf);
- if (out_of_mem) {
- p_end = -1;
- return FALSE;
- }
- p_Char[0] = '*';
- for (i=1; i<=p_ptrn_lines; i++) {
- len = pgets(TRUE);
- p_input_line++;
- if (len == 0)
- fatal2("unexpected end of file in patch at line %ld\n",
- p_input_line);
- if (*buf != '<')
- fatal2("< expected at line %ld of patch\n", p_input_line);
- p_line[i] = savestr(buf+2);
- if (out_of_mem) {
- p_end = i-1;
- return FALSE;
- }
- p_len[i] = strlen(p_line[i]);
- p_Char[i] = '-';
- }
-
- if (remove_special_line()) {
- p_len[i-1] -= 1;
- (p_line[i-1])[p_len[i-1]] = 0;
- }
-
- if (hunk_type == 'c') {
- len = pgets(TRUE);
- p_input_line++;
- if (len == 0)
- fatal2("unexpected end of file in patch at line %ld\n",
- p_input_line);
- if (*buf != '-')
- fatal2("--- expected at line %ld of patch\n", p_input_line);
- }
- Sprintf(buf, "--- %ld,%ld\n", min, max);
- p_line[i] = savestr(buf);
- if (out_of_mem) {
- p_end = i-1;
- return FALSE;
- }
- p_Char[i] = '=';
- for (i++; i<=p_end; i++) {
- len = pgets(TRUE);
- p_input_line++;
- if (len == 0)
- fatal2("unexpected end of file in patch at line %ld\n",
- p_input_line);
- if (*buf != '>')
- fatal2("> expected at line %ld of patch\n", p_input_line);
- p_line[i] = savestr(buf+2);
- if (out_of_mem) {
- p_end = i-1;
- return FALSE;
- }
- p_len[i] = strlen(p_line[i]);
- p_Char[i] = '+';
- }
-
- if (remove_special_line()) {
- p_len[i-1] -= 1;
- (p_line[i-1])[p_len[i-1]] = 0;
- }
- }
- if (reverse) /* backwards patch? */
- if (!pch_swap())
- say1("Not enough memory to swap next hunk!\n");
-#ifdef DEBUGGING
- if (debug & 2) {
- int i;
- char special;
-
- for (i=0; i <= p_end; i++) {
- if (i == p_ptrn_lines)
- special = '^';
- else
- special = ' ';
- fprintf(stderr, "%3d %c %c %s", i, p_Char[i], special, p_line[i]);
- Fflush(stderr);
- }
- }
-#endif
- if (p_end+1 < hunkmax) /* paranoia reigns supreme... */
- p_Char[p_end+1] = '^'; /* add a stopper for apply_hunk */
- return TRUE;
-}
-
-/*
- * Input a line from the patch file.
- * Worry about indentation if do_indent is true.
- * The line is read directly into the buf global variable which
- * is resized if necessary in order to hold the complete line.
- * Returns the number of characters read including the terminating
- * '\n', if any.
- */
-size_t
-pgets(bool do_indent)
-{
- char *line;
- size_t len;
- int indent = 0, skipped = 0;
-
- line = fgetln(pfp, &len);
- if (line != Nullch) {
- if (len + 1 > buf_size) {
- while (len + 1 > buf_size)
- buf_size *= 2;
- free(buf);
- buf = malloc(buf_size);
- if (buf == Nullch)
- fatal1("out of memory\n");
- }
- if (do_indent == TRUE && p_indent) {
- for (;
- indent < p_indent && (*line == ' ' || *line == '\t' || *line == 'X');
- line++, skipped++) {
- if (*line == '\t')
- indent += 8 - (indent %7);
- else
- indent++;
- }
- }
- memcpy(buf, line, len - skipped);
- buf[len - skipped] = '\0';
- }
- return len;
-}
-
-/*
- * Reverse the old and new portions of the current hunk.
- */
-bool
-pch_swap(void)
-{
- char **tp_line; /* the text of the hunk */
- short *tp_len; /* length of each line */
- char *tp_char; /* +, -, and ! */
- Reg1 LINENUM i;
- Reg2 LINENUM n;
- bool blankline = FALSE;
- Reg3 char *s;
-
- i = p_first;
- p_first = p_newfirst;
- p_newfirst = i;
-
- /* make a scratch copy */
-
- tp_line = p_line;
- tp_len = p_len;
- tp_char = p_Char;
- p_line = Null(char**); /* force set_hunkmax to allocate again */
- p_len = Null(short*);
- p_Char = Nullch;
- set_hunkmax();
- if (p_line == Null(char**) || p_len == Null(short*) || p_Char == Nullch) {
-#ifndef lint
- if (p_line == Null(char**))
- free((char*)p_line);
- p_line = tp_line;
- if (p_len == Null(short*))
- free((char*)p_len);
- p_len = tp_len;
-#endif
- if (p_Char == Nullch)
- free((char*)p_Char);
- p_Char = tp_char;
- return FALSE; /* not enough memory to swap hunk! */
- }
-
- /* now turn the new into the old */
-
- i = p_ptrn_lines + 1;
- if (tp_char[i] == '\n') { /* account for possible blank line */
- blankline = TRUE;
- i++;
- }
- if (p_efake >= 0) { /* fix non-freeable ptr range */
- if (p_efake <= i)
- n = p_end - i + 1;
- else
- n = -i;
- p_efake += n;
- p_bfake += n;
- }
- for (n=0; i <= p_end; i++,n++) {
- p_line[n] = tp_line[i];
- p_Char[n] = tp_char[i];
- if (p_Char[n] == '+')
- p_Char[n] = '-';
- p_len[n] = tp_len[i];
- }
- if (blankline) {
- i = p_ptrn_lines + 1;
- p_line[n] = tp_line[i];
- p_Char[n] = tp_char[i];
- p_len[n] = tp_len[i];
- n++;
- }
- assert(p_Char[0] == '=');
- p_Char[0] = '*';
- for (s=p_line[0]; *s; s++)
- if (*s == '-')
- *s = '*';
-
- /* now turn the old into the new */
-
- assert(tp_char[0] == '*');
- tp_char[0] = '=';
- for (s=tp_line[0]; *s; s++)
- if (*s == '*')
- *s = '-';
- for (i=0; n <= p_end; i++,n++) {
- p_line[n] = tp_line[i];
- p_Char[n] = tp_char[i];
- if (p_Char[n] == '-')
- p_Char[n] = '+';
- p_len[n] = tp_len[i];
- }
- assert(i == p_ptrn_lines + 1);
- i = p_ptrn_lines;
- p_ptrn_lines = p_repl_lines;
- p_repl_lines = i;
-#ifndef lint
- if (tp_line == Null(char**))
- free((char*)tp_line);
- if (tp_len == Null(short*))
- free((char*)tp_len);
-#endif
- if (tp_char == Nullch)
- free((char*)tp_char);
- return TRUE;
-}
-
-/*
- * Return the specified line position in the old file of the old context.
- */
-LINENUM
-pch_first(void)
-{
- return p_first;
-}
-
-/*
- * Return the number of lines of old context.
- */
-LINENUM
-pch_ptrn_lines(void)
-{
- return p_ptrn_lines;
-}
-
-/*
- * Return the probable line position in the new file of the first line.
- */
-LINENUM
-pch_newfirst(void)
-{
- return p_newfirst;
-}
-
-/*
- * Return the number of lines in the replacement text including context.
- */
-LINENUM
-pch_repl_lines(void)
-{
- return p_repl_lines;
-}
-
-/*
- * Return the number of lines in the whole hunk.
- */
-LINENUM
-pch_end(void)
-{
- return p_end;
-}
-
-/*
- * Return the number of context lines before the first changed line.
- */
-LINENUM
-pch_context(void)
-{
- return p_context;
-}
-
-/*
- * Return the length of a particular patch line.
- */
-short
-pch_line_len(LINENUM line)
-{
- return p_len[line];
-}
-
-/*
- * Return the control character (+, -, *, !, etc) for a patch line.
- */
-char
-pch_char(LINENUM line)
-{
- return p_Char[line];
-}
-
-/*
- * Return a pointer to a particular patch line.
- */
-char *
-pfetch(LINENUM line)
-{
- return p_line[line];
-}
-
-/*
- * Return where in the patch file this hunk began, for error messages.
- */
-LINENUM
-pch_hunk_beg(void)
-{
- return p_hunk_beg;
-}
-
-/*
- * Apply an ed script by feeding ed itself.
- */
-void
-do_ed_script(void)
-{
- Reg1 char *t;
- Reg2 long beginning_of_this_line;
- Reg3 bool this_line_is_command = FALSE;
- Reg4 FILE *pipefp;
-
- if (!skip_rest_of_patch) {
- Unlink(TMPOUTNAME);
- copy_file(filearg[0], TMPOUTNAME);
- if (verbose)
- Sprintf(buf, "/bin/ed %s", TMPOUTNAME);
- else
- Sprintf(buf, "/bin/ed - %s", TMPOUTNAME);
- pipefp = popen(buf, "w");
- }
- for (;;) {
- beginning_of_this_line = ftell(pfp);
- if (pgets(TRUE) == 0) {
- next_intuit_at(beginning_of_this_line, p_input_line);
- break;
- }
- p_input_line++;
- for (t=buf; isdigit((unsigned char)*t) || *t == ','; t++)
- ;
- this_line_is_command = (isdigit((unsigned char)*buf) &&
- (*t == 'd' || *t == 'c' || *t == 'a') );
- if (this_line_is_command) {
- if (!skip_rest_of_patch)
- fputs(buf, pipefp);
- if (*t != 'd') {
- while (pgets(TRUE) != 0) {
- p_input_line++;
- if (!skip_rest_of_patch)
- fputs(buf, pipefp);
- if (strEQ(buf, ".\n"))
- break;
- }
- }
- }
- else {
- next_intuit_at(beginning_of_this_line,p_input_line);
- break;
- }
- }
- if (skip_rest_of_patch)
- return;
- fprintf(pipefp, "w\n");
- fprintf(pipefp, "q\n");
- Fflush(pipefp);
- Pclose(pipefp);
- ignore_signals();
- if (move_file(TMPOUTNAME, outname) < 0) {
- toutkeep = TRUE;
- chmod(TMPOUTNAME, filemode);
- }
- else
- chmod(outname, filemode);
- set_signals(1);
-}
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