mirror of
https://github.com/jarun/nnn.git
synced 2024-11-24 11:51:27 +00:00
Remove redundant stuff
1. Have a faster copy of strlcpy() 2. Remove redundant legacy files 3. Fix an issue with NULL check on array name
This commit is contained in:
Arun Prakash Jana
parent
4bc2ce0fbc
commit
87e0891b8d
25
Makefile
25
Makefile
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@ -5,26 +5,25 @@ MANPREFIX = $(PREFIX)/man
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#CPPFLAGS = -DDEBUG
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#CFLAGS = -g
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CFLAGS = -O3 -march=native -s
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CFLAGS = -O3 -march=native
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LDLIBS = -lcurses
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DISTFILES = nnn.c strlcat.c strlcpy.c util.h config.def.h \
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nnn.1 Makefile README.md LICENSE
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OBJ = nnn.o strlcat.o strlcpy.o
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DISTFILES = nnn.c config.def.h nnn.1 Makefile README.md LICENSE
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LOCALCONFIG = config.h
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SRC = nnn.c
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BIN = nnn
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all: $(BIN)
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$(BIN): $(OBJ)
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$(CC) $(CFLAGS) -o $@ $(OBJ) $(LDFLAGS) $(LDLIBS)
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nnn.o: util.h config.h
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strlcat.o: util.h
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strlcpy.o: util.h
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config.h: config.def.h
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$(LOCALCONFIG): config.def.h
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cp config.def.h $@
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$(SRC): $(LOCALCONFIG)
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$(BIN): $(SRC)
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$(CC) $(CFLAGS) -o $@ $(SRC) $(LDFLAGS) $(LDLIBS)
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strip $(BIN)
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install: all
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mkdir -p $(DESTDIR)$(PREFIX)/bin
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cp -f $(BIN) $(DESTDIR)$(PREFIX)/bin
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@ -43,4 +42,4 @@ dist:
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rm -rf nnn-$(VERSION)
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clean:
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rm -f $(BIN) $(OBJ) nnn-$(VERSION).tar.gz
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rm -f $(BIN) nnn-$(VERSION).tar.gz
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63
nnn.c
63
nnn.c
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@ -18,8 +18,6 @@
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#include <unistd.h>
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#include <time.h>
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#include "util.h"
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#ifdef DEBUG
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#define DEBUG_FD 8
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#define DPRINTF_D(x) xprintf(DEBUG_FD, #x "=%d\n", x)
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@ -142,6 +140,29 @@ xrealloc(void *p, size_t size)
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return p;
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}
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static size_t
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xstrlcpy(char *dest, const char *src, size_t n)
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{
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size_t i;
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for (i = 0; i < n && *src; i++)
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*dest++ = *src++;
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if (n) {
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*dest = '\0';
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#ifdef CHECK_XSTRLCPY_RET
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/* Compiling this out as we are not checking
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the return value anywhere (controlled case).
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Just returning the number of bytes copied. */
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while(*src++)
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i++;
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#endif
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}
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return i;
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}
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/*
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* The poor man's implementation of memrchr().
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* We are only looking for '/' in this program.
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@ -173,11 +194,11 @@ xdirname(const char *path)
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static char out[PATH_MAX];
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char tmp[PATH_MAX], *p;
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strlcpy(tmp, path, sizeof(tmp));
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xstrlcpy(tmp, path, sizeof(tmp));
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p = dirname(tmp);
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if (p == NULL)
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printerr(1, "dirname");
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strlcpy(out, p, sizeof(out));
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xstrlcpy(out, p, sizeof(out));
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return out;
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}
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#endif
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@ -194,10 +215,10 @@ xdirname(const char *path)
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static char name[PATH_MAX];
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char *last_slash;
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strlcpy(name, path, PATH_MAX);
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xstrlcpy(name, path, PATH_MAX);
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/* Find last '/'. */
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last_slash = name != NULL ? strrchr(name, '/') : NULL;
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last_slash = strrchr(name, '/');
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if (last_slash != NULL && last_slash != name && last_slash[1] == '\0') {
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/* Determine whether all remaining characters are slashes. */
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@ -523,7 +544,7 @@ mkpath(char *dir, char *name, char *out, size_t n)
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{
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/* Handle absolute path */
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if (name[0] == '/')
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strlcpy(out, name, n);
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xstrlcpy(out, name, n);
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else {
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/* Handle root case */
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if (strcmp(dir, "/") == 0)
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@ -632,7 +653,7 @@ dentfill(char *path, struct entry **dents,
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if (filter(re, dp->d_name) == 0)
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continue;
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*dents = xrealloc(*dents, (n + 1) * sizeof(**dents));
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strlcpy((*dents)[n].name, dp->d_name, sizeof((*dents)[n].name));
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xstrlcpy((*dents)[n].name, dp->d_name, sizeof((*dents)[n].name));
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/* Get mode flags */
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mkpath(path, dp->d_name, newpath, sizeof(newpath));
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r = lstat(newpath, &sb);
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@ -797,8 +818,8 @@ browse(char *ipath, char *ifilter)
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regex_t re;
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int r, fd;
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strlcpy(path, ipath, sizeof(path));
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strlcpy(fltr, ifilter, sizeof(fltr));
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xstrlcpy(path, ipath, sizeof(path));
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xstrlcpy(fltr, ifilter, sizeof(fltr));
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oldpath[0] = '\0';
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newpath[0] = '\0';
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begin:
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@ -829,10 +850,10 @@ nochange:
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goto nochange;
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}
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/* Save history */
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strlcpy(oldpath, path, sizeof(oldpath));
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strlcpy(path, dir, sizeof(path));
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xstrlcpy(oldpath, path, sizeof(oldpath));
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xstrlcpy(path, dir, sizeof(path));
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/* Reset filter */
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strlcpy(fltr, ifilter, sizeof(fltr));
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xstrlcpy(fltr, ifilter, sizeof(fltr));
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goto begin;
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case SEL_GOIN:
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/* Cannot descend in empty directories */
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@ -863,9 +884,9 @@ nochange:
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printwarn();
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goto nochange;
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}
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strlcpy(path, newpath, sizeof(path));
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xstrlcpy(path, newpath, sizeof(path));
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/* Reset filter */
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strlcpy(fltr, ifilter, sizeof(fltr));
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xstrlcpy(fltr, ifilter, sizeof(fltr));
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goto begin;
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case S_IFREG:
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{
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@ -935,7 +956,7 @@ nochange:
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r = setfilter(&re, tmp);
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if (r != 0)
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goto nochange;
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strlcpy(fltr, tmp, sizeof(fltr));
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xstrlcpy(fltr, tmp, sizeof(fltr));
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DPRINTF_S(fltr);
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/* Save current */
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if (ndents > 0)
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@ -982,9 +1003,9 @@ nochange:
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printwarn();
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goto nochange;
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}
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strlcpy(path, newpath, sizeof(path));
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xstrlcpy(path, newpath, sizeof(path));
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/* Reset filter */
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strlcpy(fltr, ifilter, sizeof(fltr));
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xstrlcpy(fltr, ifilter, sizeof(fltr));
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DPRINTF_S(path);
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goto begin;
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case SEL_CDHOME:
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@ -997,15 +1018,15 @@ nochange:
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printwarn();
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goto nochange;
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}
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strlcpy(path, tmp, sizeof(path));
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xstrlcpy(path, tmp, sizeof(path));
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/* Reset filter */
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strlcpy(fltr, ifilter, sizeof(fltr));
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xstrlcpy(fltr, ifilter, sizeof(fltr));
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DPRINTF_S(path);
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goto begin;
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case SEL_TOGGLEDOT:
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showhidden ^= 1;
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initfilter(showhidden, &ifilter);
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strlcpy(fltr, ifilter, sizeof(fltr));
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xstrlcpy(fltr, ifilter, sizeof(fltr));
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goto begin;
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case SEL_DETAIL:
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showdetail = !showdetail;
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55
strlcat.c
55
strlcat.c
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@ -1,55 +0,0 @@
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/*
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* Copyright (c) 1998, 2015 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <string.h>
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#include "util.h"
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/*
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* Appends src to string dst of size dsize (unlike strncat, dsize is the
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* full size of dst, not space left). At most dsize-1 characters
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* will be copied. Always NUL terminates (unless dsize <= strlen(dst)).
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* Returns strlen(src) + MIN(dsize, strlen(initial dst)).
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* If retval >= dsize, truncation occurred.
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*/
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size_t
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strlcat(char *dst, const char *src, size_t dsize)
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{
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const char *odst = dst;
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const char *osrc = src;
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size_t n = dsize;
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size_t dlen;
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/* Find the end of dst and adjust bytes left but don't go past end. */
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while (n-- != 0 && *dst != '\0')
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dst++;
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dlen = dst - odst;
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n = dsize - dlen;
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if (n-- == 0)
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return(dlen + strlen(src));
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while (*src != '\0') {
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if (n != 0) {
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*dst++ = *src;
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n--;
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}
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src++;
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}
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*dst = '\0';
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return(dlen + (src - osrc)); /* count does not include NUL */
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}
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50
strlcpy.c
50
strlcpy.c
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@ -1,50 +0,0 @@
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/*
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* Copyright (c) 1998, 2015 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <string.h>
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#include "util.h"
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/*
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* Copy string src to buffer dst of size dsize. At most dsize-1
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* chars will be copied. Always NUL terminates (unless dsize == 0).
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* Returns strlen(src); if retval >= dsize, truncation occurred.
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*/
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size_t
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strlcpy(char *dst, const char *src, size_t dsize)
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{
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const char *osrc = src;
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size_t nleft = dsize;
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/* Copy as many bytes as will fit. */
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if (nleft != 0) {
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while (--nleft != 0) {
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if ((*dst++ = *src++) == '\0')
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break;
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}
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}
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/* Not enough room in dst, add NUL and traverse rest of src. */
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if (nleft == 0) {
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if (dsize != 0)
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*dst = '\0'; /* NUL-terminate dst */
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while (*src++)
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;
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}
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return(src - osrc - 1); /* count does not include NUL */
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}
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