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pajjilykk
2025-12-11 10:17:13 +07:00
parent 8a15b8d0f8
commit 82dd7bf77f
29 changed files with 0 additions and 2416 deletions
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52
mine/lab_2/kirill/Makefile
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@@ -1,52 +0,0 @@
# Makefile
CC = gcc
CFLAGS = -Wall -Wextra -O2
PICFLAGS = -fPIC
.PHONY: all dynamic static test-dynamic test-static clean
all: dynamic static
# --- Dynamic (shared) build ---
dynamic: libtext.so main_d
libtext.so: lib_d.o
$(CC) -shared -o $@ $^
main_d: main_d.o
$(CC) -o $@ $^ -ldl
lib_d.o: lib_d.c
$(CC) $(CFLAGS) $(PICFLAGS) -c $< -o $@
# --- Static build ---
static: libtext.a main_s
libtext.a: lib_s.o
ar rcs $@ $^
main_s: main_s.o libtext.a
$(CC) -o $@ main_s.o libtext.a
# Generic rule for other .o files
%.o: %.c
$(CC) $(CFLAGS) -c $< -o $@
# --- Test targets ---
# Creates a small `test_input.txt`, runs the program, and shows `out.txt`
test-dynamic: dynamic
printf "Hello123456789\nLine2abc\n" > test_input.txt
./main_d test_input.txt out.txt 100 ./libtext.so
@echo "---- out.txt ----"
cat out.txt
test-static: static
printf "Hello123456789\nLine2abc\n" > test_input.txt
./main_s test_input.txt out.txt 100
@echo "---- out.txt ----"
cat out.txt
# --- Cleanup ---
clean:
rm -f *.o *.so *.a main_d main_s test_input.txt out.txt

18
mine/lab_2/kirill/lib_d.c
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@@ -1,18 +0,0 @@
#include <string.h>
int replace_char_line(char *buf, int key, int *replacements_left) {
(void)key;
int replaced = 0;
int count = 0;
for (size_t i = 0; buf[i] != '\0'; i++) {
if (buf[i] == '\n') continue;
count++;
if (count % 3 == 0 && *replacements_left > 0) {
buf[i] = ' ';
replaced++;
(*replacements_left)--;
}
}
return replaced;
}

19
mine/lab_2/kirill/lib_s.c
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@@ -1,19 +0,0 @@
#include <stddef.h>
int replace_char_line(char *buf, int key, int *replacements_left) {
(void)key;
int replaced = 0;
int count = 0;
for (size_t i = 0; buf[i] != '\0'; i++) {
if (buf[i] == '\n') continue;
count++;
if (count % 3 == 0 && *replacements_left > 0) {
buf[i] = ' ';
replaced++;
(*replacements_left)--;
if (*replacements_left == 0) break;
}
}
return replaced;
}

62
mine/lab_2/kirill/main_d.c
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@@ -1,62 +0,0 @@
#include <stdio.h>
#include <stdlib.h>
#include <dlfcn.h>
#define MAX_LINE 4096
typedef int (*replace_func_t)(char*, int, int*);
int main(int argc, char *argv[]) {
if (argc != 5) {
fprintf(stderr, "Usage: %s <in> <out> <cap> <path_to_so>\n", argv[0]);
return 1;
}
FILE *fin = fopen(argv[1], "r");
if (!fin) { perror("fopen input"); return 1; }
FILE *fout = fopen(argv[2], "w");
if (!fout) { perror("fopen output"); fclose(fin); return 1; }
int cap = atoi(argv[3]);
if (cap < 0) {
fprintf(stderr, "invalid cap\n");
fclose(fin);
fclose(fout);
return 1;
}
void *lib = dlopen(argv[4], RTLD_LAZY);
if (!lib) {
fprintf(stderr, "dlopen error: %s\n", dlerror());
fclose(fin);
fclose(fout);
return 1;
}
replace_func_t replace = (replace_func_t)dlsym(lib, "replace_char_line");
if (!replace) {
fprintf(stderr, "dlsym error: %s\n", dlerror());
dlclose(lib);
fclose(fin);
fclose(fout);
return 1;
}
int total = 0;
char line[MAX_LINE];
while (fgets(line, sizeof(line), fin)) {
if (cap > 0) {
int key = (unsigned char)line[0];
int repl_line = replace(line, key, &cap);
total += repl_line;
}
fputs(line, fout);
}
dlclose(lib);
fclose(fin);
fclose(fout);
printf("total_replacements: %d\n", total);
return 0;
}

44
mine/lab_2/kirill/main_s.c
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@@ -1,44 +0,0 @@
#include <stdio.h>
#include <stdlib.h>
#define MAX_LINE 4096
int replace_char_line(char *buf, int key, int *replacements_left);
int main(int argc, char *argv[]) {
if (argc != 4) {
fprintf(stderr, "Usage: %s <in> <out> <cap>\n", argv[0]);
return 1;
}
FILE *fin = fopen(argv[1], "r");
if (!fin) { perror("fopen input"); return 1; }
FILE *fout = fopen(argv[2], "w");
if (!fout) { perror("fopen output"); fclose(fin); return 1; }
int cap = atoi(argv[3]);
if (cap < 0) {
fprintf(stderr, "invalid cap\n");
fclose(fin);
fclose(fout);
return 1;
}
int total = 0;
char line[MAX_LINE];
while (fgets(line, sizeof(line), fin)) {
if (cap > 0) {
// key is unused, but pass the first byte for symmetry
int key = (unsigned char)line[0];
int repl_line = replace_char_line(line, key, &cap);
total += repl_line;
}
fputs(line, fout);
}
fclose(fin);
fclose(fout);
printf("total_replacements: %d\n", total);
return 0;
}

27
mine/lab_2/old/Makefile
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@@ -1,27 +0,0 @@
# Makefile
CC = gcc
CFLAGS = -Wall -Wextra -std=c99
LDFLAGS = -ldl
# Цель по умолчанию
all: task12 libtextlib.so
# Основная программа
task12: task12.c
$(CC) $(CFLAGS) -o $@ $< $(LDFLAGS)
# Динамическая библиотека
libtextlib.so: textlib.c
$(CC) $(CFLAGS) -fPIC -shared -o $@ $<
# Очистка
clean:
rm -f task12 libtextlib.so input.txt output.txt
# Тест
test: all
echo -e "Hello world\ntest line\nanother" > input.txt
./task12 input.txt output.txt 5 ./libtextlib.so
cat output.txt
.PHONY: all clean test

96
mine/lab_2/old/task12.c
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@@ -1,96 +0,0 @@
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <dlfcn.h>
#define RBUFSZ 4096
#define WBUFSZ 4096
static void die_perror(const char *what, const char *path, int exit_code) {
int saved = errno;
char msg[512];
if (path) {
snprintf(msg, sizeof(msg), "%s: %s: %s\n", what, path, strerror(saved));
} else {
snprintf(msg, sizeof(msg), "%s: %s\n", what, strerror(saved));
}
(void) write(STDERR_FILENO, msg, strlen(msg));
_exit(exit_code);
}
static long long parse_ll(const char *s) {
char *end = NULL;
errno = 0;
long long v = strtoll(s, &end, 10);
if (errno != 0 || end == s || *end != '\0' || v < 0) {
errno = EINVAL;
return -1;
}
return v;
}
int main(int argc, char *argv[]) {
if (argc != 5) {
const char *usage =
"Usage: lab2_var12 <input.txt> <output.txt> <max_replacements> <library.so>\n"
"Variant 12: Load text processing library dynamically and process file.\n"
"Library should provide 'process_text' function.\n";
(void) write(STDERR_FILENO, usage, strlen(usage));
return -1;
}
const char *in_path = argv[1];
const char *out_path = argv[2];
long long cap = parse_ll(argv[3]);
const char *lib_path = argv[4];
if (cap < 0) {
die_perror("invalid max_replacements", argv[3], -1);
}
// Динамически загружаем библиотеку
void *lib_handle = dlopen(lib_path, RTLD_LAZY);
if (!lib_handle) {
const char *error_msg = dlerror();
char msg[512];
snprintf(msg, sizeof(msg), "dlopen failed: %s\n", error_msg ? error_msg : "unknown error");
(void) write(STDERR_FILENO, msg, strlen(msg));
return -1;
}
// Получаем указатель на функцию обработки текста
long long (*process_text)(const char*, const char*, long long) =
(long long (*)(const char*, const char*, long long)) dlsym(lib_handle, "process_text");
if (!process_text) {
const char *error_msg = dlerror();
char msg[512];
snprintf(msg, sizeof(msg), "dlsym failed: %s\n", error_msg ? error_msg : "unknown error");
(void) write(STDERR_FILENO, msg, strlen(msg));
dlclose(lib_handle);
return -1;
}
// Вызываем функцию из библиотеки
long long result = process_text(in_path, out_path, cap);
if (result < 0) {
die_perror("process_text failed", NULL, -1);
}
// Закрываем библиотеку
dlclose(lib_handle);
// Выводим результат
char res[64];
int m = snprintf(res, sizeof(res), "%lld\n", result);
if (m > 0) {
(void) write(STDOUT_FILENO, res, (size_t) m);
}
return 0;
}

93
mine/lab_2/old/textlib.c
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@@ -1,93 +0,0 @@
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#define RBUFSZ 4096
#define WBUFSZ 4096
// Функция обработки текста
long long process_text(const char *in_path, const char *out_path, long long cap) {
int in_fd = open(in_path, O_RDONLY);
if (in_fd < 0) {
return -1;
}
mode_t filePerms = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
int out_fd = open(out_path, O_CREAT | O_WRONLY | O_TRUNC, filePerms);
if (out_fd < 0) {
close(in_fd);
return -1;
}
char rbuf[RBUFSZ];
char wbuf[WBUFSZ];
size_t wlen = 0;
long long total_replacements = 0;
int at_line_start = 1;
unsigned char line_key = 0;
int replacing_enabled = 1;
for (;;) {
ssize_t n = read(in_fd, rbuf, sizeof(rbuf));
if (n > 0) {
for (ssize_t i = 0; i < n; i++) {
unsigned char c = (unsigned char) rbuf[i];
if (at_line_start) {
line_key = c;
at_line_start = 0;
}
unsigned char outc = c;
if (c == '\n') {
at_line_start = 1;
} else if (replacing_enabled && c == line_key) {
if (total_replacements < cap) {
outc = ' ';
total_replacements++;
if (total_replacements == cap) {
replacing_enabled = 0;
}
} else {
replacing_enabled = 0;
}
}
if (wlen == sizeof(wbuf)) {
ssize_t wrote = write(out_fd, wbuf, wlen);
if (wrote < 0 || (size_t) wrote != wlen) {
close(in_fd);
close(out_fd);
return -1;
}
wlen = 0;
}
wbuf[wlen++] = (char) outc;
}
} else if (n == 0) {
if (wlen > 0) {
ssize_t wrote = write(out_fd, wbuf, wlen);
if (wrote < 0 || (size_t) wrote != wlen) {
close(in_fd);
close(out_fd);
return -1;
}
wlen = 0;
}
break;
} else {
close(in_fd);
close(out_fd);
return -1;
}
}
close(in_fd);
close(out_fd);
return total_replacements;
}

52
mine/lab_2/vlad/Makefile
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@@ -1,52 +0,0 @@
# Makefile
CC = gcc
CFLAGS = -Wall -Wextra -O2
PICFLAGS = -fPIC
.PHONY: all dynamic static test-dynamic test-static clean
all: dynamic static
# --- Dynamic (shared) build ---
dynamic: libtext.so main_d
libtext.so: lib_d.o
$(CC) -shared -o $@ $^
main_d: main_d.o
$(CC) -o $@ $^ -ldl
lib_d.o: lib_d.c
$(CC) $(CFLAGS) $(PICFLAGS) -c $< -o $@
# --- Static build ---
static: libtext.a main_s
libtext.a: lib_s.o
ar rcs $@ $^
main_s: main_s.o libtext.a
$(CC) -o $@ main_s.o libtext.a
# Generic rule for other .o files
%.o: %.c
$(CC) $(CFLAGS) -c $< -o $@
# --- Test targets ---
# Creates a small `test_input.txt`, runs the program, and shows `out.txt`
test-dynamic: dynamic
printf "Hello123456789\n!!@@2211122\n" > test_input.txt
./main_d test_input.txt out.txt 100 ./libtext.so
@echo "---- out.txt ----"
cat out.txt
test-static: static
printf "Hello123456789\n!!@@2211122\n" > test_input.txt
./main_s test_input.txt out.txt 100
@echo "---- out.txt ----"
cat out.txt
# --- Cleanup ---
clean:
rm -f *.o *.so *.a main_d main_s test_input.txt out.txt

35
mine/lab_2/vlad/lib_d.c
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@@ -1,35 +0,0 @@
#include <stddef.h>
int replace_char(char *buf, int key, int *replacements_left) {
(void)key;
int replaced = 0;
size_t i = 0;
while (buf[i] != '\0') {
if (buf[i] == '\n') {
i++;
continue;
}
// Detect start of a symbol run
char symbol = buf[i];
size_t run_start = i;
size_t run_len = 1;
// Count length of run
while (buf[i + run_len] == symbol && buf[i + run_len] != '\n' && buf[i + run_len] != '\0') {
run_len++;
}
// For pairs and longer runs: replace every 2nd, 4th, ...
for (size_t j = 1; j < run_len && *replacements_left > 0; j += 2) {
buf[run_start + j] = ' ';
replaced++;
(*replacements_left)--;
if (*replacements_left == 0) break;
}
i += run_len;
}
return replaced;
}

35
mine/lab_2/vlad/lib_s.c
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@@ -1,35 +0,0 @@
#include <stddef.h>
int replace_char(char *buf, int key, int *replacements_left) {
(void)key;
int replaced = 0;
size_t i = 0;
while (buf[i] != '\0') {
if (buf[i] == '\n') {
i++;
continue;
}
// Detect start of a symbol run
char symbol = buf[i];
size_t run_start = i;
size_t run_len = 1;
// Count length of run
while (buf[i + run_len] == symbol && buf[i + run_len] != '\n' && buf[i + run_len] != '\0') {
run_len++;
}
// For pairs and longer runs: replace every 2nd, 4th, ...
for (size_t j = 1; j < run_len && *replacements_left > 0; j += 2) {
buf[run_start + j] = ' ';
replaced++;
(*replacements_left)--;
if (*replacements_left == 0) break;
}
i += run_len;
}
return replaced;
}

62
mine/lab_2/vlad/main_d.c
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@@ -1,62 +0,0 @@
#include <stdio.h>
#include <stdlib.h>
#include <dlfcn.h>
#define MAX_LINE 4096
typedef int (*replace_func_t)(char*, int, int*);
int main(int argc, char *argv[]) {
if (argc != 5) {
fprintf(stderr, "Usage: %s <in> <out> <cap> <path_to_so>\n", argv[0]);
return 1;
}
FILE *fin = fopen(argv[1], "r");
if (!fin) { perror("fopen input"); return 1; }
FILE *fout = fopen(argv[2], "w");
if (!fout) { perror("fopen output"); fclose(fin); return 1; }
int cap = atoi(argv[3]);
if (cap < 0) {
fprintf(stderr, "invalid cap\n");
fclose(fin);
fclose(fout);
return 1;
}
void *lib = dlopen(argv[4], RTLD_LAZY);
if (!lib) {
fprintf(stderr, "dlopen error: %s\n", dlerror());
fclose(fin);
fclose(fout);
return 1;
}
replace_func_t replace = (replace_func_t)dlsym(lib, "replace_char");
if (!replace) {
fprintf(stderr, "dlsym error: %s\n", dlerror());
dlclose(lib);
fclose(fin);
fclose(fout);
return 1;
}
int total = 0;
char line[MAX_LINE];
while (fgets(line, sizeof(line), fin)) {
if (cap > 0) {
int key = (unsigned char)line[0];
int repl_line = replace(line, key, &cap);
total += repl_line;
}
fputs(line, fout);
}
dlclose(lib);
fclose(fin);
fclose(fout);
printf("total_replacements: %d\n", total);
return 0;
}

44
mine/lab_2/vlad/main_s.c
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@@ -1,44 +0,0 @@
#include <stdio.h>
#include <stdlib.h>
#define MAX_LINE 4096
int replace_char(char *buf, int key, int *replacements_left);
int main(int argc, char *argv[]) {
if (argc != 4) {
fprintf(stderr, "Usage: %s <in> <out> <cap>\n", argv[0]);
return 1;
}
FILE *fin = fopen(argv[1], "r");
if (!fin) { perror("fopen input"); return 1; }
FILE *fout = fopen(argv[2], "w");
if (!fout) { perror("fopen output"); fclose(fin); return 1; }
int cap = atoi(argv[3]);
if (cap < 0) {
fprintf(stderr, "invalid cap\n");
fclose(fin);
fclose(fout);
return 1;
}
int total = 0;
char line[MAX_LINE];
while (fgets(line, sizeof(line), fin)) {
if (cap > 0) {
// key is unused, but pass the first byte for symmetry
int key = (unsigned char)line[0];
int repl_line = replace_char(line, key, &cap);
total += repl_line;
}
fputs(line, fout);
}
fclose(fin);
fclose(fout);
printf("total_replacements: %d\n", total);
return 0;
}