midfavila/mp-utils
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Remove redundant material from common.h and adjust Makefile to account

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for wc being gone.
This commit is contained in:
Mid Favila 2022-08-19 14:54:58 -04:00
parent c772d723ef
commit 2baca20487
2 changed files with 2 additions and 107 deletions
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4
src/Makefile
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@ -7,7 +7,7 @@ LDLIBS =
PREFIX = /usr/local/bin/ PREFIX = /usr/local/bin/
DESTDIR = DESTDIR =
all: echo wc yes true false cat all: echo yes true false cat
echo: echo.c echo: echo.c
wc: wc.c wc: wc.c
yes: yes.c yes: yes.c
@ -17,7 +17,7 @@ false:
cat: cat.c cat: cat.c
clean: clean:
rm echo true wc yes false cat rm echo true yes false cat
.SUFFIXES: .c .o .SUFFIXES: .c .o
.c.o: .c.o:

105
src/common.h
View File

@ -5,53 +5,6 @@
#include <unistd.h> #include <unistd.h>
#include <sys/stat.h> #include <sys/stat.h>
enum {
HASHSIZE = 101
};
/* Shamelessly copied from KnR. */
typedef struct NLIST {
char *name;
void *defn;
struct NLIST *next;
} nlist;
unsigned int hash(char *s)
{
unsigned int hashval;
for(hashval = 0; *s != '\0'; s++)
{
hashval = *s + 31 * hashval;
}
return hashval % HASHSIZE;
}
static nlist *hashtab[HASHSIZE];
struct nlist *lookup(char *s)
{
nlist *np;
for(np = hashtab[hash(s)];np != NULL; np = np->next)
{
}
}
/* Key is the name of this particular argument -- "a", "h", or "find", for example */
/* Value is generally a boolean (to indicate presence), but can be used for other things. */
/* */
typedef struct CELL {
struct CELL *prev;
char *key;
char value;
struct CELL *next;
} cell;
/* arrccat -- function to copy arr2len bytes from arr2 to the arr1len'th position of arr1. returns *newarr, and stores the length */ /* arrccat -- function to copy arr2len bytes from arr2 to the arr1len'th position of arr1. returns *newarr, and stores the length */
/* of newarr[] in arr1len (that's why it needs to be a pointer to arr1len and not just a long unsigned integer). */ /* of newarr[] in arr1len (that's why it needs to be a pointer to arr1len and not just a long unsigned integer). */
char *arrccat(char *arr1, char *arr2, size_t *arr1len, size_t arr2len) char *arrccat(char *arr1, char *arr2, size_t *arr1len, size_t arr2len)
@ -75,61 +28,3 @@ char *arrccat(char *arr1, char *arr2, size_t *arr1len, size_t arr2len)
return newarr; return newarr;
} }
/* Generate, initialize and return a doubly-linked list cell */
cell *cellgen(cell *pcell, char *key, int value, cell *ncell)
{
cell *newcell = malloc(sizeof(cell));
(*newcell).prev = pcell;
(*newcell).key = key;
(*newcell).value = value;
(*newcell).next = ncell;
return newcell;
}
/* Generate, initialize and return a doubly-linked list containing one cell per array key */
/* The final cell is guaranteed to have a value of NULL, 0, 0, NULL and serves as a sentinel. */
/* argstr is expected to be of similar format to argv -- an array of strings. argstrlen should */
/* correspond to the number of discrete strings are contained within argstr. */
cell *arglistgen(char **argstr, unsigned int argstrlen)
{
unsigned int i, i2;
i = i2 = 0;
cell *ci, *ci2;
ci = ci2 = 0;
for(i = 0; i <= argstrlen; i++)
{
if(!ci)
{
ci = ci2 = cellgen(NULL, argstr[i], 0, NULL);
}
else
{
ci -> next = cellgen(ci, argstr[i], 0, NULL);
ci = ci -> next;
}
}
return(ci2);
}
/* inlist_- -- return 1 if an element is in the provided list, 0 otherwise. list should be the first cell in a list */
int inlist_p(char *tofind, cell *list)
{
cell *ci = list;
for(; ci -> next != NULL and ci -> key != NULL; ci = ci -> next)
{
if(!strcmp(ci->key, tofind))
{
return 1;
}
}
return 0;
}