diff options
author | Julian T <julian@jtle.dk> | 2020-02-15 20:28:59 +0100 |
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committer | Julian T <julian@jtle.dk> | 2020-02-15 20:28:59 +0100 |
commit | 8076d839bf69e619f2e504122ec2ceb790a0b978 (patch) | |
tree | fa6cb7c649939c3a002676ce142105360d3d2fd6 /sem3/algo/workshop2/dfs/graph.c | |
parent | f17e8e195bd1ee3f911ae311dce8e8f7df4f8457 (diff) |
Changed to a more consistent codestyle
Diffstat (limited to 'sem3/algo/workshop2/dfs/graph.c')
-rw-r--r-- | sem3/algo/workshop2/dfs/graph.c | 64 |
1 files changed, 38 insertions, 26 deletions
diff --git a/sem3/algo/workshop2/dfs/graph.c b/sem3/algo/workshop2/dfs/graph.c index 0f5048c..0ad4467 100644 --- a/sem3/algo/workshop2/dfs/graph.c +++ b/sem3/algo/workshop2/dfs/graph.c @@ -6,7 +6,8 @@ #include "graph.h" // Hashtable -static unsigned int hash(char *s) { +static unsigned int hash(char *s) +{ uint32_t hv = 0; for( int i = 0; s[i] != '\0'; i++ ) { // take MSB 6 bits of hv and xors with LSB of s[i] @@ -20,7 +21,8 @@ static unsigned int hash(char *s) { } -static void table_insert(graph_t *g, vertex_t *v, char *var) { +static void table_insert(graph_t *g, vertex_t *v, char *var) +{ unsigned int index = hash(var); // Save old value @@ -33,19 +35,21 @@ static void table_insert(graph_t *g, vertex_t *v, char *var) { g->hashtable[index]->next = oldSym; } -static vertex_t *table_lookup(graph_t *g, char *var) { +static vertex_t *table_lookup(graph_t *g, char *var) +{ unsigned int index = hash(var); vertex_t *n = g->hashtable[index]; // Look trough list - while(n != NULL && strcmp(n->ref, var) != 0) { + while (n != NULL && strcmp(n->ref, var) != 0) { n = n->next; } return n; } -static vertex_t *create_vertex(char *ref) { +static vertex_t *create_vertex(char *ref) +{ // Get some space TODO check for null vertex_t *v = malloc(sizeof(vertex_t)); @@ -57,7 +61,8 @@ static vertex_t *create_vertex(char *ref) { return v; } -static edge_t *create_edge(vertex_t *from, vertex_t *to, int weight) { +static edge_t *create_edge(vertex_t *from, vertex_t *to, int weight) +{ edge_t *old = from->adj; // Create new list node @@ -68,12 +73,14 @@ static edge_t *create_edge(vertex_t *from, vertex_t *to, int weight) { // Do new link e->next = old; - if( old ) { + if ( old ) { e->prev = old->prev; old->prev = e; - } else { e->prev = NULL; } + } else { + e->prev = NULL; + } - if( e->prev ) { + if ( e->prev ) { e->prev->next = e; } @@ -83,16 +90,17 @@ static edge_t *create_edge(vertex_t *from, vertex_t *to, int weight) { } // For iterating edges -edge_t *edge_next(graph_t *g, edge_t *e) { - if(e == NULL || e->next == NULL ) { +edge_t *edge_next(graph_t *g, edge_t *e) +{ + if (e == NULL || e->next == NULL ) { // Find next index vertex_t *v = e ? e->from : NULL; // Find next vertex v = vertex_next(g, v); - while( v ) { + while ( v ) { // Check if found - if( v->adj ) { + if ( v->adj ) { return v->adj; } @@ -107,12 +115,13 @@ edge_t *edge_next(graph_t *g, edge_t *e) { return e->next; } -vertex_t *vertex_next(graph_t *g, vertex_t *v) { - if( v == NULL || v->next == NULL) { +vertex_t *vertex_next(graph_t *g, vertex_t *v) +{ + if ( v == NULL || v->next == NULL) { // Go to next index in hashtable int i = v ? hash(v->ref)+1 : 0; - for( ; i < HASHSIZE; i++) { - if( g->hashtable[i] ) { + for ( ; i < HASHSIZE; i++) { + if ( g->hashtable[i] ) { return g->hashtable[i]; } } @@ -124,15 +133,16 @@ vertex_t *vertex_next(graph_t *g, vertex_t *v) { return v->next; } -void graph_edge(graph_t *g, char *from, char *to, int weight) { +void graph_edge(graph_t *g, char *from, char *to, int weight) +{ vertex_t *fromv, *tov; // Does a exists - if( (fromv = table_lookup(g, from)) == NULL ) { + if ( (fromv = table_lookup(g, from)) == NULL ) { fromv = create_vertex(from); table_insert(g, fromv, from); } // What about b - if( (tov = table_lookup(g, to)) == NULL ) { + if ( (tov = table_lookup(g, to)) == NULL ) { tov = create_vertex(to); table_insert(g, tov, to); } @@ -141,15 +151,16 @@ void graph_edge(graph_t *g, char *from, char *to, int weight) { create_edge(fromv, tov, weight); } -int graph_print_adj(graph_t *g, char *ref) { +int graph_print_adj(graph_t *g, char *ref) +{ vertex_t *v = table_lookup(g, ref); - if( v == NULL ) { + if ( v == NULL ) { return 1; } edge_t *e = v->adj; printf("[ "); - while(e && e->from->ref == ref) { + while (e && e->from->ref == ref) { printf("%s[%d] ", e->to->ref, e->weight); e = e->next; } @@ -158,19 +169,20 @@ int graph_print_adj(graph_t *g, char *ref) { return 0; } -int graph_to_dot(FILE *f, graph_t *g) { +int graph_to_dot(FILE *f, graph_t *g) +{ // print pre stuff fprintf(f, "digraph coolgraph {\n"); // Label all nodes vertex_t *v = vertex_next(g, NULL); - while( v ) { + while ( v ) { fprintf(f, "%s [label=\"%s\"];\n", v->ref, v->ref); v = vertex_next(g, v); } // Print all the edges edge_t *e = edge_next(g, NULL); - while( e ) { + while ( e ) { fprintf(f, "%s -> %s [label = %d];\n", e->from->ref, e->to->ref, e->weight); e = edge_next(g, e); } |