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|
// =============================================================== //
// //
// File : arb_replace.cxx //
// Purpose : //
// //
// Institute of Microbiology (Technical University Munich) //
// http://www.arb-home.de/ //
// //
// =============================================================== //
#include <arb_strbuf.h>
#include <arb_file.h>
#include <arbdb.h>
int ARB_main(int argc, char *argv[]) {
char *data;
char *ndata;
FILE *out;
int arg;
const char *eval;
const char *fname;
int linemode = false;
int delete_empty_lines = false;
int startarg;
int patchmode = false;
if (argc <= 1 || (argc >= 2 && strcmp(argv[1], "--help") == 0)) {
printf("syntax: arb_replace [-l/L/p] \"old=newdata\" [filepattern]\n");
printf(" -l linemode, parse each line separately\n");
printf(" -L linemode, parse each line separately, delete empty lines\n");
printf(" -p patchmode, (no wildcards allowed, rightside<leftside)\n");
return -1;
}
if (!strcmp(argv[1], "-l")) {
eval = argv[2];
linemode = true;
startarg = 3;
}
else if (!strcmp(argv[1], "-L")) {
eval = argv[2];
linemode = true;
delete_empty_lines = true;
startarg = 3;
}
else if (!strcmp(argv[1], "-p")) {
eval = argv[2];
patchmode = true;
startarg = 3;
}
else {
eval = argv[1];
startarg = 2;
}
int usestdin = false;
if (startarg==argc) {
usestdin = true; // stdin stdout
argc++;
}
for (arg = startarg; arg<argc; arg++) {
if (usestdin) {
fname = "-";
}
else {
fname = argv[arg];
}
data = GB_read_file(fname);
if (data) {
if (patchmode) {
char *evaldup = strdup(eval);
char *right = strchr(evaldup, '=');
int result = 0;
if (!right) {
fprintf(stderr, "'=' not found in replace string\n");
result = -1;
}
else {
if (strlen(right) > strlen(evaldup)) {
fprintf(stderr, "You cannot replace a shorter string by a longer one!!!\n");
result = -1;
}
else {
*(right++) = 0;
int leftsize = strlen(evaldup);
unsigned long size = GB_size_of_file(fname)-leftsize;
bool patched = false;
for (unsigned long i=0; i<size; i++) {
if (!strncmp(data+i, evaldup, leftsize)) {
strcpy(data+i, right);
patched = true;
}
}
if (patched) {
out = fopen(fname, "w");
if (out) {
if (fwrite(data, (unsigned int)size, 1, out) != 1) {
fprintf(stderr, "Write failed %s\n", fname);
result = -1;
}
else {
fprintf(out, "%s", data);
printf("File %s parsed\n", fname);
}
fclose(out);
}
else {
fprintf(stderr, "Write failed %s\n", fname);
result = -1;
}
}
}
}
free(evaldup);
return result;
}
if (linemode) {
char *p = data;
char *nextp;
char *h;
GBS_strstruct *strstruct = GBS_stropen(1024);
while ((nextp = strchr(p, '\n'))) {
nextp[0] = 0; // remove '\n'
h = GBS_string_eval(p, eval, 0);
if (!h) {
h = strdup (p);
fprintf(stderr, "%s\n", GB_await_error());
}
if (usestdin) {
fprintf(stdout, "%s", h);
if (h[0] || !delete_empty_lines) {
fprintf(stdout, "\n");
}
}
else {
GBS_strcat(strstruct, h);
if (h[0] || !delete_empty_lines) { // delete empty lines
GBS_chrcat(strstruct, '\n'); // insert '\n'
}
}
p = nextp+1;
nextp[0] = '\n'; // reinsert '\n'
free(h);
}
h = GBS_string_eval(p, eval, 0);
GBS_strcat(strstruct, h);
ndata = GBS_strclose(strstruct);
free(h);
}
else {
ndata = GBS_string_eval(data, eval, 0);
}
if (!ndata) {
fprintf(stderr, "%s\n", GB_await_error());
exit(-1);
}
if (strcmp(data, ndata)) {
if (usestdin) {
fprintf(stdout, "%s", ndata);
}
else {
out = fopen(fname, "w");
if (out) {
fprintf(out, "%s", ndata);
fclose(out);
printf("File %s parsed\n", fname);
}
else {
printf("cannot write %s\n", fname);
}
}
}
free(ndata);
free(data);
}
}
return 0;
}
|
