+++ /dev/null
-/* $OpenBSD: cscope.c,v 1.3 2012/07/02 08:08:31 lum Exp $ */
-
-/*
- * This file is in the public domain.
- *
- * Author: Sunil Nimmagadda <sunil@sunilnimmagadda.com>
- */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/queue.h>
-
-#include <ctype.h>
-#include <fcntl.h>
-#include <fnmatch.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "def.h"
-
-#define CSSYMBOL 0
-#define CSDEFINITION 1
-#define CSCALLEDFUNCS 2
-#define CSCALLERFUNCS 3
-#define CSTEXT 4
-#define CSEGREP 6
-#define CSFINDFILE 7
-#define CSINCLUDES 8
-
-struct cstokens {
- const char *fname;
- const char *function;
- const char *lineno;
- const char *pattern;
-};
-
-struct csmatch {
- TAILQ_ENTRY(csmatch) entry;
- int lineno;
-};
-
-struct csrecord {
- TAILQ_ENTRY(csrecord) entry;
- char *filename;
- TAILQ_HEAD(matches, csmatch) matches;
-};
-
-static TAILQ_HEAD(csrecords, csrecord) csrecords = TAILQ_HEAD_INITIALIZER(csrecords);
-static struct csrecord *addentryr;
-static struct csrecord *currecord;
-static struct csmatch *curmatch;
-static const char *addentryfn;
-static const char *csprompt[] = {
- "Find this symbol: ",
- "Find this global definition: ",
- "Find functions called by this function: ",
- "Find functions calling this function: ",
- "Find this text string: ",
- "Change this text string: ",
- "Find this egrep pattern: ",
- "Find this file: ",
- "Find files #including this file: "
-};
-
-static int addentry(struct buffer *, char *);
-static void csflush(void);
-static int do_cscope(int);
-static int csexists(const char *);
-static int getattr(char *, struct cstokens *);
-static int jumptomatch(void);
-static void prettyprint(struct buffer *, struct cstokens *);
-static const char *ltrim(const char *);
-
-/*
- * Find this symbol. Bound to C-c s s
- */
-/* ARGSUSED */
-int
-cssymbol(int f, int n)
-{
- return (do_cscope(CSSYMBOL));
-}
-
-/*
- * Find this global definition. Bound to C-c s d
- */
-/* ARGSUSED */int
-csdefinition(int f, int n)
-{
- return (do_cscope(CSDEFINITION));
-}
-
-/*
- * Find functions called by this function. Bound to C-c s l
- */
-/* ARGSUSED */
-int
-csfuncalled(int f, int n)
-{
- return (do_cscope(CSCALLEDFUNCS));
-}
-
-/*
- * Find functions calling this function. Bound to C-c s c
- */
-/* ARGSUSED */
-int
-cscallerfuncs(int f, int n)
-{
- return (do_cscope(CSCALLERFUNCS));
-}
-
-/*
- * Find this text. Bound to C-c s t
- */
-/* ARGSUSED */
-int
-csfindtext(int f, int n)
-{
- return (do_cscope(CSTEXT));
-}
-
-/*
- * Find this egrep pattern. Bound to C-c s e
- */
-/* ARGSUSED */
-int
-csegrep(int f, int n)
-{
- return (do_cscope(CSEGREP));
-}
-
-/*
- * Find this file. Bound to C-c s f
- */
-/* ARGSUSED */
-int
-csfindfile(int f, int n)
-{
- return (do_cscope(CSFINDFILE));
-}
-
-/*
- * Find files #including this file. Bound to C-c s i
- */
-/* ARGSUSED */
-int
-csfindinc(int f, int n)
-{
- return (do_cscope(CSINCLUDES));
-}
-
-/*
- * Create list of files to index in the given directory
- * using cscope-indexer.
- */
-/* ARGSUSED */
-int
-cscreatelist(int f, int n)
-{
- struct buffer *bp;
- struct stat sb;
- FILE *fpipe;
- char dir[NFILEN], cmd[BUFSIZ], title[BUFSIZ], *line, *bufp;
- size_t len;
- int clen;
-
- if (getbufcwd(dir, sizeof(dir)) == FALSE)
- dir[0] = '\0';
-
- bufp = eread("Index files in directory: ", dir,
- sizeof(dir), EFCR | EFDEF | EFNEW | EFNUL);
-
- if (bufp == NULL)
- return (ABORT);
- else if (bufp[0] == '\0')
- return (FALSE);
-
- if (stat(dir, &sb) == -1) {
- ewprintf("stat: %s", strerror(errno));
- return (FALSE);
- } else if (S_ISDIR(sb.st_mode) == 0) {
- ewprintf("%s: Not a directory", dir);
- return (FALSE);
- }
-
- if (csexists("cscope-indexer") == FALSE) {
- ewprintf("no such file or directory, cscope-indexer");
- return (FALSE);
- }
-
- clen = snprintf(cmd, sizeof(cmd), "cscope-indexer -v %s", dir);
- if (clen < 0 || clen >= sizeof(cmd))
- return (FALSE);
-
- if ((fpipe = popen(cmd, "r")) == NULL) {
- ewprintf("problem opening pipe");
- return (FALSE);
- }
-
- bp = bfind("*cscope*", TRUE);
- if (bclear(bp) != TRUE)
- return (FALSE);
- bp->b_flag |= BFREADONLY;
-
- clen = snprintf(title, sizeof(title), "%s%s",
- "Creating cscope file list 'cscope.files' in: ", dir);
- if (clen < 0 || clen >= sizeof(title))
- return (FALSE);
- addline(bp, title);
- addline(bp, "");
- /* All lines are NUL terminated */
- while ((line = fgetln(fpipe, &len)) != NULL) {
- line[len - 1] = '\0';
- addline(bp, line);
- }
- pclose(fpipe);
- return (popbuftop(bp, WNONE));
-}
-
-/*
- * Next Symbol. Bound to C-c s n
- */
-/* ARGSUSED */
-int
-csnextmatch(int f, int n)
-{
- struct csrecord *r;
- struct csmatch *m;
-
- if (curmatch == NULL) {
- if ((r = TAILQ_FIRST(&csrecords)) == NULL) {
- ewprintf("The *cscope* buffer does not exist yet");
- return (FALSE);
- }
- currecord = r;
- curmatch = TAILQ_FIRST(&r->matches);
- } else {
- m = TAILQ_NEXT(curmatch, entry);
- if (m == NULL) {
- r = TAILQ_NEXT(currecord, entry);
- if (r == NULL) {
- ewprintf("The end of *cscope* buffer has been"
- " reached");
- return (FALSE);
- } else {
- currecord = r;
- curmatch = TAILQ_FIRST(&currecord->matches);
- }
- } else
- curmatch = m;
- }
- return (jumptomatch());
-}
-
-/*
- * Previous Symbol. Bound to C-c s p
- */
-/* ARGSUSED */
-int
-csprevmatch(int f, int n)
-{
- struct csmatch *m;
- struct csrecord *r;
-
- if (curmatch == NULL)
- return (FALSE);
- else {
- m = TAILQ_PREV(curmatch, matches, entry);
- if (m)
- curmatch = m;
- else {
- r = TAILQ_PREV(currecord, csrecords, entry);
- if (r == NULL) {
- ewprintf("The beginning of *cscope* buffer has"
- " been reached");
- return (FALSE);
- } else {
- currecord = r;
- curmatch = TAILQ_LAST(&currecord->matches,
- matches);
- }
- }
- }
- return (jumptomatch());
-}
-
-/*
- * Next file.
- */
-int
-csnextfile(int f, int n)
-{
- struct csrecord *r;
-
- if (curmatch == NULL) {
- if ((r = TAILQ_FIRST(&csrecords)) == NULL) {
- ewprintf("The *cscope* buffer does not exist yet");
- return (FALSE);
- }
-
- } else {
- if ((r = TAILQ_NEXT(currecord, entry)) == NULL) {
- ewprintf("The end of *cscope* buffer has been reached");
- return (FALSE);
- }
- }
- currecord = r;
- curmatch = TAILQ_FIRST(&currecord->matches);
- return (jumptomatch());
-}
-
-/*
- * Previous file.
- */
-int
-csprevfile(int f, int n)
-{
- struct csrecord *r;
-
- if (curmatch == NULL) {
- if ((r = TAILQ_FIRST(&csrecords)) == NULL) {
- ewprintf("The *cscope* buffer does not exist yet");
- return (FALSE);
- }
-
- } else {
- if ((r = TAILQ_PREV(currecord, csrecords, entry)) == NULL) {
- ewprintf("The beginning of *cscope* buffer has been"
- " reached");
- return (FALSE);
- }
- }
- currecord = r;
- curmatch = TAILQ_FIRST(&currecord->matches);
- return (jumptomatch());
-}
-
-/*
- * The current symbol location is extracted from currecord->filename and
- * curmatch->lineno. Load the file similar to filevisit and goto the
- * lineno recorded.
- */
-int
-jumptomatch(void)
-{
- struct buffer *bp;
- char *adjf;
-
- if (curmatch == NULL || currecord == NULL)
- return (FALSE);
- adjf = adjustname(currecord->filename, TRUE);
- if (adjf == NULL)
- return (FALSE);
- if ((bp = findbuffer(adjf)) == NULL)
- return (FALSE);
- curbp = bp;
- if (showbuffer(bp, curwp, WFFULL) != TRUE)
- return (FALSE);
- if (bp->b_fname[0] == '\0') {
- if (readin(adjf) != TRUE)
- killbuffer(bp);
- }
- gotoline(FFARG, curmatch->lineno);
- return (TRUE);
-
-}
-
-/*
- * Ask for the symbol, construct cscope commandline with the symbol
- * and passed in index. Popen cscope, read the output into *cscope*
- * buffer and pop it.
- */
-int
-do_cscope(int i)
-{
- struct buffer *bp;
- FILE *fpipe;
- char pattern[MAX_TOKEN], cmd[BUFSIZ], title[BUFSIZ];
- char *p, *buf;
- int clen, nores = 0;
- size_t len;
-
- /* If current buffer isn't a source file just return */
- if (fnmatch("*.[chy]", curbp->b_fname, 0) != 0) {
- ewprintf("C-c s not defined");
- return (FALSE);
- }
-
- if (curtoken(0, 1, pattern) == FALSE)
- return (FALSE);
- p = eread(csprompt[i], pattern, MAX_TOKEN, EFNEW | EFCR | EFDEF);
- if (p == NULL)
- return (ABORT);
- else if (p[0] == '\0')
- return (FALSE);
-
- if (csexists("cscope") == FALSE) {
- ewprintf("no such file or directory, cscope");
- return (FALSE);
- }
-
- csflush();
- clen = snprintf(cmd, sizeof(cmd), "cscope -L -%d %s 2>/dev/null",
- i, pattern);
- if (clen < 0 || clen >= sizeof(cmd))
- return (FALSE);
-
- if ((fpipe = popen(cmd, "r")) == NULL) {
- ewprintf("problem opening pipe");
- return (FALSE);
- }
-
- bp = bfind("*cscope*", TRUE);
- if (bclear(bp) != TRUE)
- return (FALSE);
- bp->b_flag |= BFREADONLY;
-
- clen = snprintf(title, sizeof(title), "%s%s", csprompt[i], pattern);
- if (clen < 0 || clen >= sizeof(title))
- return (FALSE);
- addline(bp, title);
- addline(bp, "");
- addline(bp, "-------------------------------------------------------------------------------");
- /* All lines are NUL terminated */
- while ((buf = fgetln(fpipe, &len)) != NULL) {
- buf[len - 1] = '\0';
- if (addentry(bp, buf) != TRUE)
- return (FALSE);
- nores = 1;
- };
- pclose(fpipe);
- addline(bp, "-------------------------------------------------------------------------------");
- if (nores == 0)
- ewprintf("No matches were found.");
- return (popbuftop(bp, WNONE));
-}
-
-/*
- * For each line read from cscope output, extract the tokens,
- * add them to list and pretty print a line in *cscope* buffer.
- */
-int
-addentry(struct buffer *bp, char *csline)
-{
- struct csrecord *r;
- struct csmatch *m;
- struct cstokens t;
- int lineno;
- char buf[BUFSIZ];
- const char *errstr;
-
- r = NULL;
- if (getattr(csline, &t) == FALSE)
- return (FALSE);
-
- lineno = strtonum(t.lineno, INT_MIN, INT_MAX, &errstr);
- if (errstr)
- return (FALSE);
-
- if (addentryfn == NULL || strcmp(addentryfn, t.fname) != 0) {
- if ((r = malloc(sizeof(struct csrecord))) == NULL)
- return (FALSE);
- addentryr = r;
- if ((r->filename = strndup(t.fname, NFILEN)) == NULL)
- goto cleanup;
- addentryfn = r->filename;
- TAILQ_INIT(&r->matches);
- if ((m = malloc(sizeof(struct csmatch))) == NULL)
- goto cleanup;
- m->lineno = lineno;
- TAILQ_INSERT_TAIL(&r->matches, m, entry);
- TAILQ_INSERT_TAIL(&csrecords, r, entry);
- addline(bp, "");
- if (snprintf(buf, sizeof(buf), "*** %s", t.fname) < 0)
- goto cleanup;
- addline(bp, buf);
- } else {
- if ((m = malloc(sizeof(struct csmatch))) == NULL)
- goto cleanup;
- m->lineno = lineno;
- TAILQ_INSERT_TAIL(&addentryr->matches, m, entry);
- }
- prettyprint(bp, &t);
- return (TRUE);
-cleanup:
- free(r);
- return (FALSE);
-}
-
-/*
- * Cscope line: <filename> <function> <lineno> <pattern>
- */
-int
-getattr(char *line, struct cstokens *t)
-{
- char *p;
-
- if ((p = strchr(line, ' ')) == NULL)
- return (FALSE);
- *p++ = '\0';
- t->fname = line;
- line = p;
-
- if ((p = strchr(line, ' ')) == NULL)
- return (FALSE);
- *p++ = '\0';
- t->function = line;
- line = p;
-
- if ((p = strchr(line, ' ')) == NULL)
- return (FALSE);
- *p++ = '\0';
- t->lineno = line;
-
- if (*p == '\0')
- return (FALSE);
- t->pattern = p;
-
- return (TRUE);
-}
-
-void
-prettyprint(struct buffer *bp, struct cstokens *t)
-{
- char buf[BUFSIZ];
-
- if (snprintf(buf, sizeof(buf), "%s[%s]\t\t%s",
- t->function, t->lineno, ltrim(t->pattern)) < 0)
- return;
- addline(bp, buf);
-}
-
-const char *
-ltrim(const char *s)
-{
- while (isblank(*s))
- s++;
- return s;
-}
-
-void
-csflush(void)
-{
- struct csrecord *r;
- struct csmatch *m;
-
- while ((r = TAILQ_FIRST(&csrecords)) != NULL) {
- free(r->filename);
- while ((m = TAILQ_FIRST(&r->matches)) != NULL) {
- TAILQ_REMOVE(&r->matches, m, entry);
- free(m);
- }
- TAILQ_REMOVE(&csrecords, r, entry);
- free(r);
- }
- addentryr = NULL;
- addentryfn = NULL;
- currecord = NULL;
- curmatch = NULL;
-}
-
-/*
- * Check if the cmd exists in $PATH. Split on ":" and iterate through
- * all paths in $PATH.
- */
-int
-csexists(const char *cmd)
-{
- char fname[NFILEN], *dir, *path, *pathc, *tmp;
- int cmdlen, dlen;
-
- /* Special case if prog contains '/' */
- if (strchr(cmd, '/')) {
- if (access(cmd, F_OK) == -1)
- return (FALSE);
- else
- return (TRUE);
- }
- if ((tmp = getenv("PATH")) == NULL)
- return (FALSE);
- if ((pathc = path = strndup(tmp, NFILEN)) == NULL) {
- ewprintf("out of memory");
- return (FALSE);
- }
- cmdlen = strlen(cmd);
- while ((dir = strsep(&path, ":")) != NULL) {
- if (*dir == '\0')
- *dir = '.';
-
- dlen = strlen(dir);
- while (dir[dlen-1] == '/')
- dir[--dlen] = '\0'; /* strip trailing '/' */
-
- if (dlen + 1 + cmdlen >= sizeof(fname)) {
- ewprintf("path too long");
- goto cleanup;
- }
- snprintf(fname, sizeof(fname), "%s/%s", dir, cmd);
- if(access(fname, F_OK) == 0) {
- free(pathc);
- return (TRUE);
- }
- }
-cleanup:
- free(pathc);
- return (FALSE);
-}
projects / pd_readline / blobdiff